PET BG825 Specifications | MizanPetroGas<\/title><\/p>\n<style>\n :root {\n --brand: #D80D07;\n --text: #333;\n --muted: #666;\n --light-bg: #f9f9f9;\n --border: #e0e0e0;\n }\n .mpg-spec-table-wrap {\n font-family: 'Arial', sans-serif !important;\n direction: ltr;\n max-width: 1140px;\n margin: 0 auto;\n width: 100%;\n overflow-x: auto;\n }\n .mpg-spec-table {\n width: 100%;\n border-collapse: collapse;\n font-size: 0.93em;\n min-width: 600px;\n }\n .mpg-spec-table th,\n .mpg-spec-table td {\n border: 1px solid var(--border);\n padding: 11px 14px;\n text-align: left;\n vertical-align: middle;\n }\n .mpg-spec-table th {\n background: var(--light-bg);\n font-weight: 600;\n color: var(--brand);\n width: 240px;\n }\n .mpg-spec-table td {\n color: var(--text);\n }\n .mpg-spec-table tr:nth-child(even) td {\n background: #fafafa;\n }\n .mpg-spec-footer {\n text-align: center;\n color: var(--muted);\n font-size: 0.85em;\n margin-top: 12px;\n }\n <\/style>\n<p><\/head><br \/>\n<body><\/p>\n<div class=\"mpg-spec-table-wrap\">\n<table class=\"mpg-spec-table\">\n<tbody>\n<tr>\n<th>Product Name<\/th>\n<td>Polyethylene Terephthalate \u2014 PET BG825<\/td>\n<\/tr>\n<tr>\n<th>Chemical Family \/ Formula<\/th>\n<td>Thermoplastic Polyester \u2014 (C\u2081\u2080H\u2088O\u2084)n<\/td>\n<\/tr>\n<tr>\n<th>Grade<\/th>\n<td>825 (Bottle Grade)<\/td>\n<\/tr>\n<tr>\n<th>Physical Appearance<\/th>\n<td>Transparent crystalline chips \/ granules \u2014 High purity<\/td>\n<\/tr>\n<tr>\n<th>Origin Complex Producer<\/th>\n<td>Shahid Tondgooyan Petrochemical Company<\/td>\n<\/tr>\n<tr>\n<th>Packaging Type<\/th>\n<td>Standard 25 kg multi-layer moisture-barrier bags (Palletized)<\/td>\n<\/tr>\n<tr>\n<th>Supplier<\/th>\n<td>MizanPetroGas<\/td>\n<\/tr>\n<tr>\n<th>Contact<\/th>\n<td style=\"color:var(--brand);font-weight:600;\"><a href=\"https:\/\/wa.me\/989155118932\" style=\"color:var(--brand);text-decoration:none;\">09155118932 (Direct WhatsApp Contact)<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"mpg-spec-footer\">MizanPetroGas | Contact: 09155118932 | sell@mizanpetrogas.com<\/div>\n<\/div>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<style>\n :root {\n --brand: #D80D07;\n --text: #333;\n --muted: #666;\n --light-bg: #f9f9f9;\n --border: #e0e0e0;\n }\n .mpg-product {\n font-family: 'Arial', sans-serif !important;\n color: var(--text);\n line-height: 1.6;\n text-align: left;\n max-width: 1140px;\n margin: 0 auto;\n direction: ltr;\n }\n .mpg-product h2 {\n color: var(--brand);\n border-bottom: 2px solid var(--brand);\n padding-bottom: 8px;\n margin: 40px 0 18px;\n font-size: 1.4em;\n }\n .mpg-product h3 {\n color: var(--brand);\n margin-top: 24px;\n font-size: 1.1em;\n }\n .mpg-product p {\n margin: 10px 0;\n }\n .mpg-highlight {\n background: var(--light-bg);\n border-left: 5px solid var(--brand);\n padding: 16px 22px;\n border-radius: 0 10px 10px 0;\n margin: 20px 0;\n }\n .mpg-tech-table-wrap {\n width: 100%;\n overflow-x: auto;\n margin: 18px 0 24px;\n }\n .mpg-tech-table {\n width: 100%;\n border-collapse: collapse;\n font-size: 0.93em;\n min-width: 680px;\n }\n .mpg-tech-table th,\n .mpg-tech-table td {\n border: 1px solid var(--border);\n padding: 11px 14px;\n text-align: center;\n vertical-align: middle;\n }\n .mpg-tech-table th {\n background: var(--light-bg);\n font-weight: 600;\n }\n .mpg-card-wrap {\n display: flex;\n flex-wrap: wrap;\n gap: 16px;\n margin: 20px 0;\n }\n .mpg-card {\n flex: 1 1 calc(33.333% - 16px);\n min-width: 200px;\n border: 1px solid var(--border);\n border-radius: 8px;\n padding: 16px 18px;\n background: #fff;\n box-shadow: 0 2px 6px rgba(0,0,0,0.03);\n }\n .mpg-card h4 {\n color: var(--brand);\n margin: 0 0 8px;\n font-size: 1.05em;\n }\n .mpg-feature-list {\n list-style: none;\n padding-left: 0;\n columns: 2;\n column-gap: 24px;\n }\n .mpg-feature-list li {\n padding: 8px 0 8px 28px;\n position: relative;\n margin-bottom: 4px;\n break-inside: avoid;\n }\n .mpg-feature-list li::before {\n content: \"\";\n position: absolute;\n left: 0;\n top: 14px;\n width: 10px;\n height: 10px;\n background: var(--brand);\n border-radius: 50%;\n }\n .mpg-cta {\n background: var(--brand);\n color: #fff;\n padding: 28px 22px;\n border-radius: 10px;\n text-align: center;\n margin-top: 40px;\n }\n .mpg-cta a {\n display: inline-block;\n background: rgba(255,255,255,0.18);\n color: #fff;\n padding: 12px 30px;\n border-radius: 6px;\n text-decoration: none;\n font-weight: 700;\n margin-top: 14px;\n border: 1px solid rgba(255,255,255,0.3);\n transition: background 0.2s;\n }\n .mpg-cta a:hover {\n background: rgba(255,255,255,0.28);\n }\n .mpg-note {\n background: #fff8e1;\n border-left: 5px solid #f9a825;\n padding: 14px 20px;\n border-radius: 0 8px 8px 0;\n margin: 18px 0;\n font-size: 0.93em;\n }\n .mpg-process-box {\n background: #f3f3f3;\n border: 1px dashed #bbb;\n border-radius: 8px;\n padding: 22px 24px;\n margin: 20px 0;\n }\n .mpg-process-box h4 {\n color: var(--brand);\n margin: 0 0 12px;\n }\n @media (max-width: 768px) {\n .mpg-card {\n flex: 1 1 calc(50% - 16px);\n }\n .mpg-feature-list {\n columns: 1;\n }\n }\n @media (max-width: 500px) {\n .mpg-card {\n flex: 1 1 100%;\n }\n }\n<\/style>\n<div class=\"mpg-product\">\n<h1 style=\"color:var(--brand);margin-bottom:4px;\">Polyethylene Terephthalate Grade 821 (PET BG821) \u2013 Bottle Grade<\/h1>\n<p style=\"color:var(--muted);margin-bottom:30px;\">\n Thermoplastic polyester with optimized intrinsic viscosity and superior gas barrier properties \u2013 Prime choice for carbonated soft drinks (CSD) and oxygen-sensitive packaging | Produced by Shahid Tondgooyan Petrochemical | Supplier: MizanPetroGas\n <\/p>\n<h2>Product Introduction<\/h2>\n<p>\n <strong>Polyethylene Terephthalate Grade 821 (PET BG821)<\/strong> is one of the premier bottle-grade resins in the product portfolio of <strong>Shahid Tondgooyan Petrochemical Company<\/strong>. It is engineered to satisfy the stringent quality and performance demands of the beverage packaging sector, particularly for <strong>Carbonated Soft Drinks (CSD)<\/strong> and barrier-critical food packaging. This grade is commercially available in two tailored sub-grades: <strong>BG-820 S<\/strong> and <strong>BG-820 N<\/strong>, both complying with global food-contact safety standards.\n <\/p>\n<p>\n PET is a <strong>thermoplastic polyester<\/strong> with the repeating molecular structure <strong>$(C_{10}H_8O_4)_n$<\/strong>, produced via the condensation polymerization of <strong>Purified Terephthalic Acid (PTA)<\/strong> and <strong>Monoethylene Glycol (MEG)<\/strong>. Grade BG821 is specifically optimized for high-speed <strong>Injection Stretch Blow Molding (ISBM)<\/strong> and standard blow-molding processes, delivering a precise balance of intrinsic viscosity (IV), crystal clarity, impact toughness, and <strong>low gas permeation ($CO_2$ and $O_2$)<\/strong>.\n <\/p>\n<p>\n Manufactured by <strong>Shahid Tondgooyan Petrochemical Company<\/strong> using advanced <strong>Solid State Polymerization (SSP)<\/strong> technology, this resin provides consistent batch-to-batch quality. <strong>MizanPetroGas Company<\/strong> supplies PET BG821 directly to converters with verified manufacturer Certificates of Analysis (COA) and reliable logistics support.\n <\/p>\n<div class=\"mpg-highlight\">\n <strong>MizanPetroGas | <a href=\"https:\/\/wa.me\/989155118932\" style=\"color:var(--brand);text-decoration:none;\">09155118932<\/a> | sell@mizanpetrogas.com<\/strong>\n <\/div>\n<h2>Pricing and Purchasing PET BG821<\/h2>\n<p>\n Commercial pricing for PET Bottle Grade BG821 reflects movements in <strong>international PTA and MEG benchmark indices<\/strong>, foreign exchange rates, beverage industry seasonal cycles, and regional production allocations. <strong>MizanPetroGas<\/strong> facilitates streamlined material procurement for bottling plants and converting operations. Contact our commercial sales desk to receive current pricing and proforma invoices for both BG-820 S and BG-820 N sub-grades.\n <\/p>\n<h2>Chemical Structure and Manufacturing Process<\/h2>\n<p>\n PET resin is synthesized via the <strong>polycondensation<\/strong> of two key petrochemical feedstocks: <strong>Purified Terephthalic Acid (PTA)<\/strong> and <strong>Monoethylene Glycol (MEG)<\/strong>. The production cycle at Shahid Tondgooyan Petrochemical consists of four primary phases:\n <\/p>\n<div class=\"mpg-process-box\">\n<h4>PET BG821 Production Steps at Shahid Tondgooyan Petrochemical<\/h4>\n<ol style=\"line-height:2.0; padding-left: 20px;\">\n<li><strong>Esterification:<\/strong> PTA and MEG react at high temperatures (240\u2013260\u00b0C) to yield bis(2-hydroxyethyl) terephthalate (BHET) monomer, releasing water as a condensation byproduct.<\/li>\n<li><strong>Melt Polymerization:<\/strong> BHET undergoes polycondensation under high vacuum and elevated temperatures (270\u2013290\u00b0C) to form amorphous PET with base intrinsic viscosity ($IV \\approx 0.60\\text{ dL\/g}$).<\/li>\n<li><strong>Solid State Polymerization (SSP):<\/strong> Amorphous chips are held below their melting point (200\u2013220\u00b0C) under high vacuum or inert nitrogen ($N_2$) flow, steadily increasing the IV to the bottle-grade specification while stripping residual <strong>acetaldehyde (AA)<\/strong> to minimal levels.<\/li>\n<li><strong>Crystallization & Bagging:<\/strong> The stabilized polymer is crystallized into uniform granules and packed into 25 kg moisture-barrier bags on standard pallets.<\/li>\n<\/ol><\/div>\n<h2>Comparison: Sub-Grades BG-820 S vs. BG-820 N<\/h2>\n<p>\n PET BG821 is produced in two specialized sub-grades to match specific container performance criteria and filling requirements:\n <\/p>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>BG-820 S (CSD Grade)<\/h4>\n<p>Engineered for <strong>Carbonated Soft Drink (CSD) bottles<\/strong> requiring high hoop strength, burst pressure resistance, and minimal $CO_2$ loss on high-speed ISBM lines.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>BG-820 N (Water Grade)<\/h4>\n<p>Designed for <strong>mineral water and still beverage bottles<\/strong>, prioritizing maximum optical clarity and ultra-low acetaldehyde (AA) to preserve pristine taste and aroma.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Technical Grade Consultation<\/h4>\n<p>Our polymer engineers assist in selecting the ideal sub-grade based on machine specifications, cycle speeds, and preform design. <strong>Contact: 09155118932<\/strong><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Key Features<\/h2>\n<ul class=\"mpg-feature-list\">\n<li>Optimized Intrinsic Viscosity (IV: 0.80\u20130.84 dL\/g for S | 0.78\u20130.82 dL\/g for N)<\/li>\n<li>Crystal-Clear Optical Transparency and High Surface Gloss<\/li>\n<li>High Tensile and Hoop Burst Strength<\/li>\n<li>Low Gas Permeability ($CO_2$ Retention & $O_2$ Ingress Barrier)<\/li>\n<li>Excellent Toughness and Impact Resistance<\/li>\n<li>Superb High-Speed Processability in ISBM and Blow Molding<\/li>\n<li>High Thermal Stability (up to 285\u00b0C)<\/li>\n<li>Low Specific Gravity for Lightweight Preform Designs<\/li>\n<li>Zero Odor or Flavor Impartation to Sensitive Beverages<\/li>\n<li>Food-Grade Certified (FDA & EFSA Compliant)<\/li>\n<li>Ultra-Low Acetaldehyde (AA) Content<\/li>\n<li>100% Recyclable Thermoplastic Polymer<\/li>\n<\/ul>\n<h2>Key Advantages<\/h2>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Superior Carbonation Retention<\/h4>\n<p>Sub-grade BG-820 S provides dense molecular packing, significantly <strong>reducing $CO_2$ loss<\/strong> to extend the shelf life of carbonated soft drinks.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Ultra-Low Acetaldehyde (AA)<\/h4>\n<p>Sub-grade BG-820 N guarantees <strong>ultra-low AA levels<\/strong>, preventing off-tastes in unflavored, still mineral and spring waters.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>High-Speed Molding Stability<\/h4>\n<p>Uniform molecular weight distribution ensures wide processing windows, consistent stretch characteristics, and low scrap rates on rotary ISBM machines.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Brilliant Product Display<\/h4>\n<p>Delivers glass-like clarity and high surface gloss, enhancing packaging aesthetics and shelf presence for beverage brands.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Lightweighting Potential<\/h4>\n<p>High mechanical strength allows container converters to reduce preform weights without compromising top-load capacity or base burst strength.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Certified Food Safety<\/h4>\n<p>Meets international regulatory mandates for direct food and beverage contact with non-detectable monomer or additive migration.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Applications and Target Industries<\/h2>\n<h3>Carbonated Soft Drinks & Sparkling Beverages<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Carbonated Soft Drink (CSD) Bottles<\/h4>\n<p>Production of 0.3L to 2.5L CSD bottles with petaloid bases designed to withstand internal pressure up to 6 bar without base inversion.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Sparkling Water & Energy Drinks<\/h4>\n<p>Packaging for sparkling mineral waters and carbonated functional drinks requiring high $CO_2$ barrier retention and drop toughness.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Carbonated Malt Beverages<\/h4>\n<p>Lightweight containers for non-alcoholic malt beverages providing barrier protection against oxygen ingress and carbonation loss.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h3>Mineral Water & Still Beverages<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Natural Mineral & Spring Water<\/h4>\n<p>Single-serve (0.5L) and family-pack (1.5L) still water bottles requiring pure taste preservation and water-clear transparency.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Ready-to-Drink (RTD) Teas & Juices<\/h4>\n<p>Bottling still juices, iced teas, and flavored waters with excellent surface gloss and clarity.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Edible Oil & Condiment Bottles<\/h4>\n<p>Bottling culinary oils and liquid condiments where grease resistance and clear display of contents are essential.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Typical Technical Specifications \u2013 PET BG821<\/h2>\n<div class=\"mpg-tech-table-wrap\">\n<table class=\"mpg-tech-table\">\n<thead>\n<tr>\n<th>No.<\/th>\n<th>Property<\/th>\n<th>BG-820 S (CSD)<\/th>\n<th>BG-820 N (Water)<\/th>\n<th>Unit<\/th>\n<th>Test Method<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Intrinsic Viscosity (IV)<\/td>\n<td>0.80 \u2013 0.84<\/td>\n<td>0.78 \u2013 0.82<\/td>\n<td>dL\/g<\/td>\n<td>ASTM D4603<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Acetaldehyde Content (AA)<\/td>\n<td>< 1.5<\/td>\n<td>< 1.0<\/td>\n<td>ppm<\/td>\n<td>ASTM D4526 (HS-GC)<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Diethylene Glycol (DEG)<\/td>\n<td>1.0 \u2013 1.5<\/td>\n<td>1.0 \u2013 1.5<\/td>\n<td>wt %<\/td>\n<td>ASTM D4603<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Melting Point ($T_m$)<\/td>\n<td>245 \u2013 255<\/td>\n<td>245 \u2013 255<\/td>\n<td>\u00b0C<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Glass Transition Temp ($T_g$)<\/td>\n<td>75 \u2013 80<\/td>\n<td>75 \u2013 80<\/td>\n<td>\u00b0C<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Density<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>g\/cm\u00b3<\/td>\n<td>ASTM D1505 \/ D792<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>Moisture Content<\/td>\n<td>< 0.4<\/td>\n<td>< 0.4<\/td>\n<td>wt %<\/td>\n<td>ASTM D4019 (KF)<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>Carboxyl End Groups (\u2013COOH)<\/td>\n<td>< 30<\/td>\n<td>< 30<\/td>\n<td>mmol\/kg<\/td>\n<td>ASTM D7409<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>Crystallinity<\/td>\n<td>50 \u2013 55<\/td>\n<td>50 \u2013 55<\/td>\n<td>%<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Bottle Clarity (Haze)<\/td>\n<td>< 3.5<\/td>\n<td>< 3.0<\/td>\n<td>% Haze<\/td>\n<td>ASTM D1003<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>Color Value ($b^*$)<\/td>\n<td>< 1.5<\/td>\n<td>< 1.0<\/td>\n<td>\u2014<\/td>\n<td>CIE Lab (HunterLab)<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>Physical Appearance<\/td>\n<td>Clear Granules<\/td>\n<td>Clear Granules<\/td>\n<td>\u2014<\/td>\n<td>Visual<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>Packaging<\/td>\n<td colspan=\"2\">25 kg bags \u2013 40 bags per pallet (1,000 kg)<\/td>\n<td>\u2014<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>Manufacturer<\/td>\n<td colspan=\"2\">Shahid Tondgooyan Petrochemical Company<\/td>\n<td>\u2014<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div class=\"mpg-note\">\n<p style=\"margin-top:0;\">\n <strong>⚠️ Notice:<\/strong> Figures listed represent typical technical properties. Specific lot parameters are confirmed in the official <strong>Certificate of Analysis (COA)<\/strong> provided by MizanPetroGas.\n <\/p>\n<\/p><\/div>\n<h2>Handling, Drying & Processing Guidelines<\/h2>\n<div class=\"mpg-highlight\">\n<ul style=\"margin-bottom:0; padding-left: 20px;\">\n<li><strong>Hygroscopic Sensitivity:<\/strong> PET absorbs ambient moisture. Moisture above 40 ppm causes <strong>hydrolytic chain degradation<\/strong> during extrusion, leading to IV drop, loss of mechanical strength, and haze defects.<\/li>\n<li><strong>Pre-Drying Parameters:<\/strong> Dehumidify resin at <strong>160\u2013170\u00b0C for 4 to 6 hours<\/strong> with a desiccant dryer operating at a dew point $\\leq -40\\text{\u00b0C}$ to reduce moisture below 30 ppm.<\/li>\n<li><strong>Melt Temperature:<\/strong> Set injection barrel temperatures between <strong>270\u2013290\u00b0C<\/strong>; do not exceed 295\u00b0C to avoid thermal degradation and acetaldehyde spikes.<\/li>\n<li><strong>Preform Mold Chilling:<\/strong> Maintain mold chilled water at <strong>6\u201312\u00b0C<\/strong> for rapid quenching, ensuring completely amorphous preforms.<\/li>\n<li><strong>Stretch Blow Reheating:<\/strong> Reheat preforms to <strong>95\u2013110\u00b0C<\/strong> for optimal biaxial orientation and maximum burst resistance.<\/li>\n<li><strong>Storage Conditions:<\/strong> Store in a cool, dry warehouse (10\u201330\u00b0C) protected from direct sunlight. Bags should remain sealed until machine loading.<\/li>\n<\/ul><\/div>\n<div class=\"mpg-cta\">\n<h2 style=\"color:#fff; border-bottom: none; margin-top: 0;\">Order PET BG821 \u2014 Request Official Quotation<\/h2>\n<p style=\"font-size:1.1em; margin: 14px 0;\">Bottle Grade PET (BG-820 S \/ BG-820 N) | Shahid Tondgooyan Petrochemical<\/p>\n<p style=\"font-size:1.3em; font-weight:700; direction:ltr;\"><a href=\"https:\/\/wa.me\/989155118932\" style=\"color:#fff;text-decoration:none;\">09155118932<\/a><\/p>\n<p style=\"direction:ltr;\">sell@mizanpetrogas.com<\/p>\n<p> <a href=\"https:\/\/wa.me\/989155118932\">09155118932 \u2014 Direct WhatsApp Contact<\/a><br \/>\n <a href=\"mailto:sell@mizanpetrogas.com\" style=\"margin-left:10px;\">Email Quotation Request<\/a>\n <\/div>\n<p style=\"text-align:center; margin-top: 30px; color: var(--muted); font-size:0.85em;\">\n \u00a9 All technical content rights reserved for MizanPetroGas | www.mizanpetrogas.com\n <\/p>\n<\/div>\n","protected":false},"featured_media":4559,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":""},"pwb-brand":[],"product_brand":[],"product_cat":[174,172,152],"product_tag":[248],"class_list":{"0":"post-4570","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bottle","7":"product_cat-pet","8":"product_cat-polymers","9":"product_tag-bottle-polyethylene-terephthalate","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"acf":[],"brands":[],"_links":{"self":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product\/4570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/comments?post=4570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/media\/4559"}],"wp:attachment":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/media?parent=4570"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/pwb-brand?post=4570"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_brand?post=4570"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_cat?post=4570"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_tag?post=4570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":4570,"date":"2026-08-09T23:12:27","date_gmt":"2026-08-09T19:42:27","guid":{"rendered":"https:\/\/mizanpetrogas.com\/product\/pet-bg821\/"},"modified":"2026-08-14T09:51:11","modified_gmt":"2026-08-14T06:21:11","slug":"pet-bg821","status":"publish","type":"product","link":"https:\/\/mizanpetrogas.com\/en\/product\/pet-bg821\/","title":{"rendered":"PET BG821"},"content":{"rendered":"

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\n PET BG825 Specifications | MizanPetroGas<\/title><\/p>\n<style>\n :root {\n --brand: #D80D07;\n --text: #333;\n --muted: #666;\n --light-bg: #f9f9f9;\n --border: #e0e0e0;\n }\n .mpg-spec-table-wrap {\n font-family: 'Arial', sans-serif !important;\n direction: ltr;\n max-width: 1140px;\n margin: 0 auto;\n width: 100%;\n overflow-x: auto;\n }\n .mpg-spec-table {\n width: 100%;\n border-collapse: collapse;\n font-size: 0.93em;\n min-width: 600px;\n }\n .mpg-spec-table th,\n .mpg-spec-table td {\n border: 1px solid var(--border);\n padding: 11px 14px;\n text-align: left;\n vertical-align: middle;\n }\n .mpg-spec-table th {\n background: var(--light-bg);\n font-weight: 600;\n color: var(--brand);\n width: 240px;\n }\n .mpg-spec-table td {\n color: var(--text);\n }\n .mpg-spec-table tr:nth-child(even) td {\n background: #fafafa;\n }\n .mpg-spec-footer {\n text-align: center;\n color: var(--muted);\n font-size: 0.85em;\n margin-top: 12px;\n }\n <\/style>\n<p><\/head><br \/>\n<body><\/p>\n<div class=\"mpg-spec-table-wrap\">\n<table class=\"mpg-spec-table\">\n<tbody>\n<tr>\n<th>Product Name<\/th>\n<td>Polyethylene Terephthalate \u2014 PET BG825<\/td>\n<\/tr>\n<tr>\n<th>Chemical Family \/ Formula<\/th>\n<td>Thermoplastic Polyester \u2014 (C\u2081\u2080H\u2088O\u2084)n<\/td>\n<\/tr>\n<tr>\n<th>Grade<\/th>\n<td>825 (Bottle Grade)<\/td>\n<\/tr>\n<tr>\n<th>Physical Appearance<\/th>\n<td>Transparent crystalline chips \/ granules \u2014 High purity<\/td>\n<\/tr>\n<tr>\n<th>Origin Complex Producer<\/th>\n<td>Shahid Tondgooyan Petrochemical Company<\/td>\n<\/tr>\n<tr>\n<th>Packaging Type<\/th>\n<td>Standard 25 kg multi-layer moisture-barrier bags (Palletized)<\/td>\n<\/tr>\n<tr>\n<th>Supplier<\/th>\n<td>MizanPetroGas<\/td>\n<\/tr>\n<tr>\n<th>Contact<\/th>\n<td style=\"color:var(--brand);font-weight:600;\"><a href=\"https:\/\/wa.me\/989155118932\" style=\"color:var(--brand);text-decoration:none;\">09155118932 (Direct WhatsApp Contact)<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"mpg-spec-footer\">MizanPetroGas | Contact: 09155118932 | sell@mizanpetrogas.com<\/div>\n<\/div>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<style>\n :root {\n --brand: #D80D07;\n --text: #333;\n --muted: #666;\n --light-bg: #f9f9f9;\n --border: #e0e0e0;\n }\n .mpg-product {\n font-family: 'Arial', sans-serif !important;\n color: var(--text);\n line-height: 1.6;\n text-align: left;\n max-width: 1140px;\n margin: 0 auto;\n direction: ltr;\n }\n .mpg-product h2 {\n color: var(--brand);\n border-bottom: 2px solid var(--brand);\n padding-bottom: 8px;\n margin: 40px 0 18px;\n font-size: 1.4em;\n }\n .mpg-product h3 {\n color: var(--brand);\n margin-top: 24px;\n font-size: 1.1em;\n }\n .mpg-product p {\n margin: 10px 0;\n }\n .mpg-highlight {\n background: var(--light-bg);\n border-left: 5px solid var(--brand);\n padding: 16px 22px;\n border-radius: 0 10px 10px 0;\n margin: 20px 0;\n }\n .mpg-tech-table-wrap {\n width: 100%;\n overflow-x: auto;\n margin: 18px 0 24px;\n }\n .mpg-tech-table {\n width: 100%;\n border-collapse: collapse;\n font-size: 0.93em;\n min-width: 680px;\n }\n .mpg-tech-table th,\n .mpg-tech-table td {\n border: 1px solid var(--border);\n padding: 11px 14px;\n text-align: center;\n vertical-align: middle;\n }\n .mpg-tech-table th {\n background: var(--light-bg);\n font-weight: 600;\n }\n .mpg-card-wrap {\n display: flex;\n flex-wrap: wrap;\n gap: 16px;\n margin: 20px 0;\n }\n .mpg-card {\n flex: 1 1 calc(33.333% - 16px);\n min-width: 200px;\n border: 1px solid var(--border);\n border-radius: 8px;\n padding: 16px 18px;\n background: #fff;\n box-shadow: 0 2px 6px rgba(0,0,0,0.03);\n }\n .mpg-card h4 {\n color: var(--brand);\n margin: 0 0 8px;\n font-size: 1.05em;\n }\n .mpg-feature-list {\n list-style: none;\n padding-left: 0;\n columns: 2;\n column-gap: 24px;\n }\n .mpg-feature-list li {\n padding: 8px 0 8px 28px;\n position: relative;\n margin-bottom: 4px;\n break-inside: avoid;\n }\n .mpg-feature-list li::before {\n content: \"\";\n position: absolute;\n left: 0;\n top: 14px;\n width: 10px;\n height: 10px;\n background: var(--brand);\n border-radius: 50%;\n }\n .mpg-cta {\n background: var(--brand);\n color: #fff;\n padding: 28px 22px;\n border-radius: 10px;\n text-align: center;\n margin-top: 40px;\n }\n .mpg-cta a {\n display: inline-block;\n background: rgba(255,255,255,0.18);\n color: #fff;\n padding: 12px 30px;\n border-radius: 6px;\n text-decoration: none;\n font-weight: 700;\n margin-top: 14px;\n border: 1px solid rgba(255,255,255,0.3);\n transition: background 0.2s;\n }\n .mpg-cta a:hover {\n background: rgba(255,255,255,0.28);\n }\n .mpg-note {\n background: #fff8e1;\n border-left: 5px solid #f9a825;\n padding: 14px 20px;\n border-radius: 0 8px 8px 0;\n margin: 18px 0;\n font-size: 0.93em;\n }\n .mpg-process-box {\n background: #f3f3f3;\n border: 1px dashed #bbb;\n border-radius: 8px;\n padding: 22px 24px;\n margin: 20px 0;\n }\n .mpg-process-box h4 {\n color: var(--brand);\n margin: 0 0 12px;\n }\n @media (max-width: 768px) {\n .mpg-card {\n flex: 1 1 calc(50% - 16px);\n }\n .mpg-feature-list {\n columns: 1;\n }\n }\n @media (max-width: 500px) {\n .mpg-card {\n flex: 1 1 100%;\n }\n }\n<\/style>\n<div class=\"mpg-product\">\n<h1 style=\"color:var(--brand);margin-bottom:4px;\">Polyethylene Terephthalate Grade 821 (PET BG821) \u2013 Bottle Grade<\/h1>\n<p style=\"color:var(--muted);margin-bottom:30px;\">\n Thermoplastic polyester with optimized intrinsic viscosity and superior gas barrier properties \u2013 Prime choice for carbonated soft drinks (CSD) and oxygen-sensitive packaging | Produced by Shahid Tondgooyan Petrochemical | Supplier: MizanPetroGas\n <\/p>\n<h2>Product Introduction<\/h2>\n<p>\n <strong>Polyethylene Terephthalate Grade 821 (PET BG821)<\/strong> is one of the premier bottle-grade resins in the product portfolio of <strong>Shahid Tondgooyan Petrochemical Company<\/strong>. It is engineered to satisfy the stringent quality and performance demands of the beverage packaging sector, particularly for <strong>Carbonated Soft Drinks (CSD)<\/strong> and barrier-critical food packaging. This grade is commercially available in two tailored sub-grades: <strong>BG-820 S<\/strong> and <strong>BG-820 N<\/strong>, both complying with global food-contact safety standards.\n <\/p>\n<p>\n PET is a <strong>thermoplastic polyester<\/strong> with the repeating molecular structure <strong>$(C_{10}H_8O_4)_n$<\/strong>, produced via the condensation polymerization of <strong>Purified Terephthalic Acid (PTA)<\/strong> and <strong>Monoethylene Glycol (MEG)<\/strong>. Grade BG821 is specifically optimized for high-speed <strong>Injection Stretch Blow Molding (ISBM)<\/strong> and standard blow-molding processes, delivering a precise balance of intrinsic viscosity (IV), crystal clarity, impact toughness, and <strong>low gas permeation ($CO_2$ and $O_2$)<\/strong>.\n <\/p>\n<p>\n Manufactured by <strong>Shahid Tondgooyan Petrochemical Company<\/strong> using advanced <strong>Solid State Polymerization (SSP)<\/strong> technology, this resin provides consistent batch-to-batch quality. <strong>MizanPetroGas Company<\/strong> supplies PET BG821 directly to converters with verified manufacturer Certificates of Analysis (COA) and reliable logistics support.\n <\/p>\n<div class=\"mpg-highlight\">\n <strong>MizanPetroGas | <a href=\"https:\/\/wa.me\/989155118932\" style=\"color:var(--brand);text-decoration:none;\">09155118932<\/a> | sell@mizanpetrogas.com<\/strong>\n <\/div>\n<h2>Pricing and Purchasing PET BG821<\/h2>\n<p>\n Commercial pricing for PET Bottle Grade BG821 reflects movements in <strong>international PTA and MEG benchmark indices<\/strong>, foreign exchange rates, beverage industry seasonal cycles, and regional production allocations. <strong>MizanPetroGas<\/strong> facilitates streamlined material procurement for bottling plants and converting operations. Contact our commercial sales desk to receive current pricing and proforma invoices for both BG-820 S and BG-820 N sub-grades.\n <\/p>\n<h2>Chemical Structure and Manufacturing Process<\/h2>\n<p>\n PET resin is synthesized via the <strong>polycondensation<\/strong> of two key petrochemical feedstocks: <strong>Purified Terephthalic Acid (PTA)<\/strong> and <strong>Monoethylene Glycol (MEG)<\/strong>. The production cycle at Shahid Tondgooyan Petrochemical consists of four primary phases:\n <\/p>\n<div class=\"mpg-process-box\">\n<h4>PET BG821 Production Steps at Shahid Tondgooyan Petrochemical<\/h4>\n<ol style=\"line-height:2.0; padding-left: 20px;\">\n<li><strong>Esterification:<\/strong> PTA and MEG react at high temperatures (240\u2013260\u00b0C) to yield bis(2-hydroxyethyl) terephthalate (BHET) monomer, releasing water as a condensation byproduct.<\/li>\n<li><strong>Melt Polymerization:<\/strong> BHET undergoes polycondensation under high vacuum and elevated temperatures (270\u2013290\u00b0C) to form amorphous PET with base intrinsic viscosity ($IV \\approx 0.60\\text{ dL\/g}$).<\/li>\n<li><strong>Solid State Polymerization (SSP):<\/strong> Amorphous chips are held below their melting point (200\u2013220\u00b0C) under high vacuum or inert nitrogen ($N_2$) flow, steadily increasing the IV to the bottle-grade specification while stripping residual <strong>acetaldehyde (AA)<\/strong> to minimal levels.<\/li>\n<li><strong>Crystallization & Bagging:<\/strong> The stabilized polymer is crystallized into uniform granules and packed into 25 kg moisture-barrier bags on standard pallets.<\/li>\n<\/ol><\/div>\n<h2>Comparison: Sub-Grades BG-820 S vs. BG-820 N<\/h2>\n<p>\n PET BG821 is produced in two specialized sub-grades to match specific container performance criteria and filling requirements:\n <\/p>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>BG-820 S (CSD Grade)<\/h4>\n<p>Engineered for <strong>Carbonated Soft Drink (CSD) bottles<\/strong> requiring high hoop strength, burst pressure resistance, and minimal $CO_2$ loss on high-speed ISBM lines.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>BG-820 N (Water Grade)<\/h4>\n<p>Designed for <strong>mineral water and still beverage bottles<\/strong>, prioritizing maximum optical clarity and ultra-low acetaldehyde (AA) to preserve pristine taste and aroma.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Technical Grade Consultation<\/h4>\n<p>Our polymer engineers assist in selecting the ideal sub-grade based on machine specifications, cycle speeds, and preform design. <strong>Contact: 09155118932<\/strong><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Key Features<\/h2>\n<ul class=\"mpg-feature-list\">\n<li>Optimized Intrinsic Viscosity (IV: 0.80\u20130.84 dL\/g for S | 0.78\u20130.82 dL\/g for N)<\/li>\n<li>Crystal-Clear Optical Transparency and High Surface Gloss<\/li>\n<li>High Tensile and Hoop Burst Strength<\/li>\n<li>Low Gas Permeability ($CO_2$ Retention & $O_2$ Ingress Barrier)<\/li>\n<li>Excellent Toughness and Impact Resistance<\/li>\n<li>Superb High-Speed Processability in ISBM and Blow Molding<\/li>\n<li>High Thermal Stability (up to 285\u00b0C)<\/li>\n<li>Low Specific Gravity for Lightweight Preform Designs<\/li>\n<li>Zero Odor or Flavor Impartation to Sensitive Beverages<\/li>\n<li>Food-Grade Certified (FDA & EFSA Compliant)<\/li>\n<li>Ultra-Low Acetaldehyde (AA) Content<\/li>\n<li>100% Recyclable Thermoplastic Polymer<\/li>\n<\/ul>\n<h2>Key Advantages<\/h2>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Superior Carbonation Retention<\/h4>\n<p>Sub-grade BG-820 S provides dense molecular packing, significantly <strong>reducing $CO_2$ loss<\/strong> to extend the shelf life of carbonated soft drinks.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Ultra-Low Acetaldehyde (AA)<\/h4>\n<p>Sub-grade BG-820 N guarantees <strong>ultra-low AA levels<\/strong>, preventing off-tastes in unflavored, still mineral and spring waters.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>High-Speed Molding Stability<\/h4>\n<p>Uniform molecular weight distribution ensures wide processing windows, consistent stretch characteristics, and low scrap rates on rotary ISBM machines.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Brilliant Product Display<\/h4>\n<p>Delivers glass-like clarity and high surface gloss, enhancing packaging aesthetics and shelf presence for beverage brands.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Lightweighting Potential<\/h4>\n<p>High mechanical strength allows container converters to reduce preform weights without compromising top-load capacity or base burst strength.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Certified Food Safety<\/h4>\n<p>Meets international regulatory mandates for direct food and beverage contact with non-detectable monomer or additive migration.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Applications and Target Industries<\/h2>\n<h3>Carbonated Soft Drinks & Sparkling Beverages<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Carbonated Soft Drink (CSD) Bottles<\/h4>\n<p>Production of 0.3L to 2.5L CSD bottles with petaloid bases designed to withstand internal pressure up to 6 bar without base inversion.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Sparkling Water & Energy Drinks<\/h4>\n<p>Packaging for sparkling mineral waters and carbonated functional drinks requiring high $CO_2$ barrier retention and drop toughness.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Carbonated Malt Beverages<\/h4>\n<p>Lightweight containers for non-alcoholic malt beverages providing barrier protection against oxygen ingress and carbonation loss.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h3>Mineral Water & Still Beverages<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Natural Mineral & Spring Water<\/h4>\n<p>Single-serve (0.5L) and family-pack (1.5L) still water bottles requiring pure taste preservation and water-clear transparency.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Ready-to-Drink (RTD) Teas & Juices<\/h4>\n<p>Bottling still juices, iced teas, and flavored waters with excellent surface gloss and clarity.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Edible Oil & Condiment Bottles<\/h4>\n<p>Bottling culinary oils and liquid condiments where grease resistance and clear display of contents are essential.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Typical Technical Specifications \u2013 PET BG821<\/h2>\n<div class=\"mpg-tech-table-wrap\">\n<table class=\"mpg-tech-table\">\n<thead>\n<tr>\n<th>No.<\/th>\n<th>Property<\/th>\n<th>BG-820 S (CSD)<\/th>\n<th>BG-820 N (Water)<\/th>\n<th>Unit<\/th>\n<th>Test Method<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Intrinsic Viscosity (IV)<\/td>\n<td>0.80 \u2013 0.84<\/td>\n<td>0.78 \u2013 0.82<\/td>\n<td>dL\/g<\/td>\n<td>ASTM D4603<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Acetaldehyde Content (AA)<\/td>\n<td>< 1.5<\/td>\n<td>< 1.0<\/td>\n<td>ppm<\/td>\n<td>ASTM D4526 (HS-GC)<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Diethylene Glycol (DEG)<\/td>\n<td>1.0 \u2013 1.5<\/td>\n<td>1.0 \u2013 1.5<\/td>\n<td>wt %<\/td>\n<td>ASTM D4603<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Melting Point ($T_m$)<\/td>\n<td>245 \u2013 255<\/td>\n<td>245 \u2013 255<\/td>\n<td>\u00b0C<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Glass Transition Temp ($T_g$)<\/td>\n<td>75 \u2013 80<\/td>\n<td>75 \u2013 80<\/td>\n<td>\u00b0C<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Density<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>g\/cm\u00b3<\/td>\n<td>ASTM D1505 \/ D792<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>Moisture Content<\/td>\n<td>< 0.4<\/td>\n<td>< 0.4<\/td>\n<td>wt %<\/td>\n<td>ASTM D4019 (KF)<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>Carboxyl End Groups (\u2013COOH)<\/td>\n<td>< 30<\/td>\n<td>< 30<\/td>\n<td>mmol\/kg<\/td>\n<td>ASTM D7409<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>Crystallinity<\/td>\n<td>50 \u2013 55<\/td>\n<td>50 \u2013 55<\/td>\n<td>%<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Bottle Clarity (Haze)<\/td>\n<td>< 3.5<\/td>\n<td>< 3.0<\/td>\n<td>% Haze<\/td>\n<td>ASTM D1003<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>Color Value ($b^*$)<\/td>\n<td>< 1.5<\/td>\n<td>< 1.0<\/td>\n<td>\u2014<\/td>\n<td>CIE Lab (HunterLab)<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>Physical Appearance<\/td>\n<td>Clear Granules<\/td>\n<td>Clear Granules<\/td>\n<td>\u2014<\/td>\n<td>Visual<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>Packaging<\/td>\n<td colspan=\"2\">25 kg bags \u2013 40 bags per pallet (1,000 kg)<\/td>\n<td>\u2014<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>Manufacturer<\/td>\n<td colspan=\"2\">Shahid Tondgooyan Petrochemical Company<\/td>\n<td>\u2014<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div class=\"mpg-note\">\n<p style=\"margin-top:0;\">\n <strong>⚠️ Notice:<\/strong> Figures listed represent typical technical properties. Specific lot parameters are confirmed in the official <strong>Certificate of Analysis (COA)<\/strong> provided by MizanPetroGas.\n <\/p>\n<\/p><\/div>\n<h2>Handling, Drying & Processing Guidelines<\/h2>\n<div class=\"mpg-highlight\">\n<ul style=\"margin-bottom:0; padding-left: 20px;\">\n<li><strong>Hygroscopic Sensitivity:<\/strong> PET absorbs ambient moisture. Moisture above 40 ppm causes <strong>hydrolytic chain degradation<\/strong> during extrusion, leading to IV drop, loss of mechanical strength, and haze defects.<\/li>\n<li><strong>Pre-Drying Parameters:<\/strong> Dehumidify resin at <strong>160\u2013170\u00b0C for 4 to 6 hours<\/strong> with a desiccant dryer operating at a dew point $\\leq -40\\text{\u00b0C}$ to reduce moisture below 30 ppm.<\/li>\n<li><strong>Melt Temperature:<\/strong> Set injection barrel temperatures between <strong>270\u2013290\u00b0C<\/strong>; do not exceed 295\u00b0C to avoid thermal degradation and acetaldehyde spikes.<\/li>\n<li><strong>Preform Mold Chilling:<\/strong> Maintain mold chilled water at <strong>6\u201312\u00b0C<\/strong> for rapid quenching, ensuring completely amorphous preforms.<\/li>\n<li><strong>Stretch Blow Reheating:<\/strong> Reheat preforms to <strong>95\u2013110\u00b0C<\/strong> for optimal biaxial orientation and maximum burst resistance.<\/li>\n<li><strong>Storage Conditions:<\/strong> Store in a cool, dry warehouse (10\u201330\u00b0C) protected from direct sunlight. Bags should remain sealed until machine loading.<\/li>\n<\/ul><\/div>\n<div class=\"mpg-cta\">\n<h2 style=\"color:#fff; border-bottom: none; margin-top: 0;\">Order PET BG821 \u2014 Request Official Quotation<\/h2>\n<p style=\"font-size:1.1em; margin: 14px 0;\">Bottle Grade PET (BG-820 S \/ BG-820 N) | Shahid Tondgooyan Petrochemical<\/p>\n<p style=\"font-size:1.3em; font-weight:700; direction:ltr;\"><a href=\"https:\/\/wa.me\/989155118932\" style=\"color:#fff;text-decoration:none;\">09155118932<\/a><\/p>\n<p style=\"direction:ltr;\">sell@mizanpetrogas.com<\/p>\n<p> <a href=\"https:\/\/wa.me\/989155118932\">09155118932 \u2014 Direct WhatsApp Contact<\/a><br \/>\n <a href=\"mailto:sell@mizanpetrogas.com\" style=\"margin-left:10px;\">Email Quotation Request<\/a>\n <\/div>\n<p style=\"text-align:center; margin-top: 30px; color: var(--muted); font-size:0.85em;\">\n \u00a9 All technical content rights reserved for MizanPetroGas | www.mizanpetrogas.com\n <\/p>\n<\/div>\n","protected":false},"featured_media":4559,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":""},"pwb-brand":[],"product_brand":[],"product_cat":[174,172,152],"product_tag":[248],"class_list":{"0":"post-4570","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bottle","7":"product_cat-pet","8":"product_cat-polymers","9":"product_tag-bottle-polyethylene-terephthalate","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"acf":[],"brands":[],"_links":{"self":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product\/4570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/comments?post=4570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/media\/4559"}],"wp:attachment":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/media?parent=4570"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/pwb-brand?post=4570"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_brand?post=4570"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_cat?post=4570"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_tag?post=4570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}