{"id":4557,"date":"2026-08-09T23:27:41","date_gmt":"2026-08-09T19:57:41","guid":{"rendered":"https:\/\/mizanpetrogas.com\/product\/pet-bg845\/"},"modified":"2026-08-14T09:37:20","modified_gmt":"2026-08-14T06:07:20","slug":"pet-bg845","status":"publish","type":"product","link":"https:\/\/mizanpetrogas.com\/en\/product\/pet-bg845\/","title":{"rendered":"PET BG845"},"content":{"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 845 (PET BG845) \u2013 Bottle Grade<\/h1>\n<p style=\"color:var(--muted);margin-bottom:30px;\">\n        High-clarity thermoplastic polyester with the highest intrinsic viscosity in the bottle-grade portfolio \u2013 Prime choice for ultra-large containers, industrial carboys, and heavy-duty bottles | Produced by Shahid Tondgooyan Petrochemical | Supplier: MizanPetroGas\n    <\/p>\n<h2>Product Introduction<\/h2>\n<p>\n        <strong>Polyethylene Terephthalate Grade 845 (PET BG845)<\/strong> is the premium bottle grade within the product portfolio of <strong>Shahid Tondgooyan Petrochemical Company<\/strong>. Formulated with the <strong>highest Intrinsic Viscosity (IV)<\/strong> among standard commercial bottle grades, it is specifically engineered for producing ultra-large plastic containers, industrial carboys, 5-to-20-liter water bottles, and wide-mouth jars requiring exceptional mechanical strength. Produced via advanced <strong>Solid State Polymerization (SSP)<\/strong> technology, this grade exhibits extended polymer chain lengths, translating directly to <strong>superior mechanical strength, outstanding creep resistance, and extended structural durability<\/strong> in blow-molded containers.\n    <\/p>\n<p>\n        PET is a <strong>thermoplastic polyester<\/strong> with the repeating molecular formula <strong>$(C_{10}H_8O_4)_n$<\/strong>, synthesized via the condensation polymerization of <strong>pure terephthalic acid (PTA)<\/strong> and <strong>monoethylene glycol (MEG)<\/strong>. Grade 845 represents the pinnacle of polymer engineering in the PET bottle family: polymer chain lengths are maximized to deliver <strong>exceptional mechanical properties<\/strong>, crystalline optical clarity, and robust processing stability. <strong>MizanPetroGas Company<\/strong> supplies this strategic polymer with full quality assurance, guaranteed authenticity, and verified manufacturer Certificates of Analysis (COA).\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 BG845<\/h2>\n<p>\n        The commercial pricing of PET Bottle Grade 845 is primarily determined by <strong>global feedstock prices for PTA and MEG<\/strong>, foreign exchange dynamics, seasonal demand cycles across the packaging sector, and producer allocation policies. <strong>MizanPetroGas<\/strong> streamlines material procurement for converting operations. For real-time pricing inquiries, verified technical datasheets, and immediate inventory dispatch, please contact our polymer sales specialists.\n    <\/p>\n<h2>Chemical Structure and Manufacturing Process<\/h2>\n<p>\n        PET is produced through the <strong>condensation reaction<\/strong> of two primary feedstocks: <strong>Purified Terephthalic Acid (PTA)<\/strong> and <strong>Monoethylene Glycol (MEG)<\/strong>. The production cycle at Shahid Tondgooyan Petrochemical includes the following stages:\n    <\/p>\n<div class=\"mpg-process-box\">\n<h4>PET BG845 Production Steps at Shahid Tondgooyan Petrochemical<\/h4>\n<ol style=\"line-height:2.0; padding-left: 20px;\">\n<li><strong>Esterification Reaction:<\/strong> PTA and MEG react at elevated temperatures (240\u2013260\u00b0C) to produce bis(2-hydroxyethyl) terephthalate (BHET) monomer with water as a condensation by-product.<\/li>\n<li><strong>Melt Polymerization:<\/strong> BHET undergoes polycondensation under high temperature (270\u2013290\u00b0C) and high vacuum to yield amorphous PET with a baseline intrinsic viscosity ($IV \\approx 0.60\u20130.64\\text{ dL\/g}$).<\/li>\n<li><strong>Solid State Polymerization (SSP) \u2013 Extended Phase:<\/strong> Amorphous PET chips are subjected to temperatures below their melting point (200\u2013220\u00b0C) under high vacuum or inert gas ($N_2$) flow for an <strong>extended residence time<\/strong> to increase the intrinsic viscosity to the <strong>highest range in the bottle-grade class (0.84\u20130.88 dL\/g)<\/strong>. This step simultaneously strips out residual acetaldehyde (AA).<\/li>\n<li><strong>Final Crystallization &amp; Packaging:<\/strong> The polymer chips undergo final crystallization and are packed into standard 25 kg multi-layer moisture-barrier bags.<\/li>\n<\/ol><\/div>\n<h2>Why PET BG845? \u2013 Peak Performance in Bottle Grades<\/h2>\n<p>\n        Grade 845 is the <strong>most premium<\/strong> member of the bottle-grade PET portfolio. It is tailored for converters with <strong>stringent technical requirements<\/strong> where finished containers must withstand <strong>maximum mechanical stress, high hydrostatic pressure, and prolonged top-load forces<\/strong>. The elevated IV translates directly into extended polymer chains, higher molecular entanglement, and superior physical properties across all performance vectors.\n    <\/p>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Highest Bottle-Grade IV<\/h4>\n<p>Intrinsic viscosity of <strong>0.84 to 0.88 dL\/g<\/strong> provides extended polymer chain architecture, delivering <strong>unmatched tensile strength, creep resistance, and impact toughness<\/strong>.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Engineered for Heavy Containers<\/h4>\n<p>Optimized for blowing <strong>5 to 20-liter water carboys<\/strong>, large industrial containers, and thick-walled bottles subjected to heavy contents and stacking loads.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Crystal Clarity &amp; Gloss<\/h4>\n<p>Transparent crystalline granules yield blow-molded bottles with <strong>exceptional clarity<\/strong>, low haze, and a brilliant surface finish that enhances shelf appeal.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Key Features<\/h2>\n<ul class=\"mpg-feature-list\">\n<li>Highest Intrinsic Viscosity (IV: 0.84\u20130.88 dL\/g)<\/li>\n<li>Crystal-Clear Transparency and High Surface Gloss<\/li>\n<li>Outstanding Tensile Strength<\/li>\n<li>Superior Creep Resistance<\/li>\n<li>High Impact and Drop Resistance<\/li>\n<li>Effective Barrier Properties Against $CO_2$ and $O_2$<\/li>\n<li>Excellent Processability in ISBM and EBM<\/li>\n<li>High Thermal Stability (up to 285\u00b0C)<\/li>\n<li>Low Specific Gravity (1.38\u20131.40 g\/cm\u00b3)<\/li>\n<li>Zero Taste and Odor Residuals in Finished Containers<\/li>\n<li>Food-Contact Compliant (FDA &amp; EFSA Food Grade)<\/li>\n<li>Controlled Low Acetaldehyde Content (Low AA)<\/li>\n<li>Chemical Resistance to Dilute Acids and Alkalis<\/li>\n<li>100% Recyclable Thermoplastic Polymer<\/li>\n<li>Uniform Molecular Weight Distribution<\/li>\n<li>Optimized for Ultra-Large Bottles and Industrial Carboys<\/li>\n<\/ul>\n<h2>Key Advantages<\/h2>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Unrivaled Mechanical Strength<\/h4>\n<p>The highest IV in bottle grades ensures <strong>longer polymer chains<\/strong> and high molecular entanglement, preventing environmental stress cracking (ESCR) and wall fatigue.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Built for Large-Volume Packaging<\/h4>\n<p>Engineered for <strong>5-to-20-liter water carboys<\/strong>, edible oil jugs, and chemical containers where liquid mass and transport stresses demand high melt strength.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Exceptional Optical Clarity<\/h4>\n<p>Produces brilliant, water-clear bottles that highlight product purity \u2014 a crucial marketing asset for consumer-facing brands.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Long-Term Dimensional Stability<\/h4>\n<p>High creep resistance ensures <strong>bottles retain their shape and structural integrity<\/strong> during extended storage, heavy palletization, and temperature fluctuations.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Certified Food Contact Safety<\/h4>\n<p>Fully compliant with <strong>FDA, EFSA, and national food-contact regulations<\/strong>, with non-detectable harmful monomer or additive migration.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Lightweighting Potential<\/h4>\n<p>Higher mechanical properties allow converters to <strong>reduce wall thickness<\/strong> while maintaining rigidity, lowering raw material consumption and per-unit production costs.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Applications and Target Industries<\/h2>\n<h3>Ultra-Large Bottles &amp; Industrial Carboys<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>5 to 20-Liter Water Carboys<\/h4>\n<p>Production of heavy-duty 5-gallon water dispenser carboys and 5\u201310L water bottles requiring <strong>high drop resistance<\/strong> and robust stacking strength.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Large Edible Oil Containers<\/h4>\n<p>Bulk packaging for edible oils (5\u201320L) offering chemical resistance to fatty acids and <strong>oxygen barrier protection<\/strong> against oxidative rancidity.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Industrial Wide-Mouth Jars<\/h4>\n<p>Molding of large-format wide-mouth jars and chemical bottles for non-corrosive liquids, institutional detergents, and hygiene products.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h3>Food &amp; Beverage Packaging<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Large Beverage Bottles<\/h4>\n<p>Bottling still beverages and juices in 2-to-5-liter formats with high clarity and sufficient tensile strength to withstand transport pressures.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Condiment &amp; Sauce Containers<\/h4>\n<p>Commercial packaging for ketchups, dressings, and culinary sauces resistant to acetic and organic acids, <strong>preserving flavor and aroma<\/strong>.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Bulk Dry Food Jars<\/h4>\n<p>Rigid, clear jars for dried fruits, nuts, grains, and confectionery providing moisture barrier properties to maintain product freshness.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h3>Pharmaceutical, Cosmetic &amp; Household Chemical Packaging<\/h3>\n<div class=\"mpg-card-wrap\">\n<div class=\"mpg-card\">\n<h4>Bulk Pharmaceutical Containers<\/h4>\n<p>Large-volume syrup and liquid supplement bottles meeting stringent pharmacopeial cleanliness standards and <strong>chemical non-reactivity<\/strong>.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Cosmetics &amp; Personal Care<\/h4>\n<p>Economy-size bottles for shampoos, lotions, and body washes combining premium surface gloss with resistance to surfactant stress cracking.<\/p>\n<\/p><\/div>\n<div class=\"mpg-card\">\n<h4>Household Cleaner Bottles<\/h4>\n<p>Rigid packaging for liquid detergents, multi-surface cleaners, and household products requiring <strong>alkaline resistance<\/strong>.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<h2>Typical Technical Specifications \u2013 PET BG845<\/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>Typical Value<\/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>0.84 \u2013 0.88<\/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>&lt; 1.5<\/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) Content<\/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>\u00b0C<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Glass Transition Temperature ($T_g$)<\/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>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>&lt; 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>&lt; 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>%<\/td>\n<td>ASTM D3418 (DSC)<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Bottle Clarity (Haze)<\/td>\n<td>&lt; 3.5<\/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>&lt; 1.2<\/td>\n<td>\u2014<\/td>\n<td>CIE Lab (HunterLab)<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>Melt Flow Rate (MFR)*<\/td>\n<td>Available upon inquiry<\/td>\n<td>g\/10min<\/td>\n<td>ASTM D1238<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>Physical Appearance<\/td>\n<td>Transparent crystalline chips<\/td>\n<td>\u2014<\/td>\n<td>Visual<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>Granule Dimensions<\/td>\n<td>2.5\u20133.5 (Dia) \u00d7 2.5\u20133.5 (Length)<\/td>\n<td>mm<\/td>\n<td>Standard Sieve<\/td>\n<\/tr>\n<tr>\n<td>15<\/td>\n<td>Packaging<\/td>\n<td>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>16<\/td>\n<td>Manufacturer<\/td>\n<td>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>&#x26a0;&#xfe0f; Notice:<\/strong> The values listed above represent typical properties based on standard Shahid Tondgooyan Petrochemical analyses. For consignment-specific <strong>Certificates of Analysis (COA)<\/strong>, please contact the technical department of MizanPetroGas.\n        <\/p>\n<\/p><\/div>\n<h2>Performance Rating Overview<\/h2>\n<div class=\"mpg-highlight\">\n<table style=\"width:100%; border-collapse: collapse;\">\n<tbody>\n<tr>\n<td style=\"padding: 6px 12px; width: 35%;\">Intrinsic Viscosity (IV) \u2014 Class Maximum<\/td>\n<td style=\"padding: 6px 12px; width: 45%;\"><span style=\"display:block;width:100%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right; width: 20%;\">Maximum<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Tensile Strength<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:97%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Exceptional<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Creep Resistance<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:98%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Exceptional<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Impact Resistance<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:94%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Excellent<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Optical Clarity<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:90%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Very Good<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">$CO_2$ Barrier Performance<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:84%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Good<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Low Acetaldehyde (Low AA)<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:87%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Very Good<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Food Grade Compliance<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:100%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Fully Certified<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Lightweighting Potential<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:95%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Excellent<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Recyclability<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:100%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">100%<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 6px 12px;\">Supply Reliability<\/td>\n<td style=\"padding: 6px 12px;\"><span style=\"display:block;width:93%;background:#D80D07;height:6px;border-radius:3px;\"><\/span><\/td>\n<td style=\"padding: 6px 12px; text-align:right;\">Guaranteed<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h2>Handling, Dehumidifying &amp; Processing Guidelines<\/h2>\n<div class=\"mpg-highlight\">\n<ul style=\"margin-bottom:0; padding-left: 20px;\">\n<li><strong>Hygroscopic Sensitivity:<\/strong> PET is naturally <strong>hygroscopic<\/strong>. Absorbed moisture exceeding 0.004% (40 ppm) causes <strong>hydrolytic degradation<\/strong> of the polymer backbone during melt extrusion, triggering significant IV loss, reduced mechanical toughness, and bubble defects.<\/li>\n<li><strong>Mandatory Pre-Drying:<\/strong> Chips must be dried prior to injection at <strong>160\u2013170\u00b0C for 4 to 6 hours<\/strong> to achieve moisture levels below 30 ppm. Use <strong>desiccant dehumidifying dryers<\/strong> with an operating dew point $\\leq -40\\text{\u00b0C}$.<\/li>\n<li><strong>Injection Processing Temperature:<\/strong> 270\u2013290\u00b0C (avoid temperatures above 295\u00b0C to prevent thermal degradation, AA formation, and yellowing).<\/li>\n<li><strong>Preform Mold Chilling:<\/strong> 6\u201315\u00b0C (cold mold for rapid quenching to maintain amorphous clarity).<\/li>\n<li><strong>Stretch-Blow Molding Temperature:<\/strong> 95\u2013110\u00b0C (optimum preform reheating window for uniform bi-axial orientation).<\/li>\n<li><strong>Warehouse Storage:<\/strong> Store in a cool, dry area protected from direct UV exposure and moisture. Keep bags hermetically sealed until feeding. Recommended storage temperature: 10\u201330\u00b0C.<\/li>\n<li><strong>Shelf Life:<\/strong> Stored in original unopened packaging under standard conditions, the material maintains optimal processability for up to <strong>12 months<\/strong> from manufacture date.<\/li>\n<\/ul><\/div>\n<h2>Comprehensive Grade Comparison: Shahid Tondgooyan Bottle PET<\/h2>\n<div class=\"mpg-tech-table-wrap\">\n<table class=\"mpg-tech-table\">\n<thead>\n<tr>\n<th>Property<\/th>\n<th>BG845<\/th>\n<th>BG825<\/th>\n<th>BG821 (BG-820 S)<\/th>\n<th>BG821 (BG-820 N)<\/th>\n<th>BG785<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Intrinsic Viscosity (IV)<\/td>\n<td style=\"background:#fff3f2;font-weight:600;\">0.84 \u2013 0.88<\/td>\n<td>0.82 \u2013 0.86<\/td>\n<td>0.80 \u2013 0.84<\/td>\n<td>0.78 \u2013 0.82<\/td>\n<td>0.78 \u2013 0.82<\/td>\n<\/tr>\n<tr>\n<td>Primary Application<\/td>\n<td style=\"background:#fff3f2;\">Ultra-large carboys, industrial containers<\/td>\n<td>Large bottles, jars, and carboys<\/td>\n<td>CSD bottles (Carbonated soft drinks)<\/td>\n<td>Mineral water bottles<\/td>\n<td>General water and beverage bottles<\/td>\n<\/tr>\n<tr>\n<td>Key Advantage<\/td>\n<td style=\"background:#fff3f2;\">Maximum IV + Lightweighting<\/td>\n<td>High IV + Creep resistance<\/td>\n<td>Low $CO_2$ permeation<\/td>\n<td>Clarity + Ultra-Low AA<\/td>\n<td>Balanced general-purpose<\/td>\n<\/tr>\n<tr>\n<td>Target Bottle Volume<\/td>\n<td style=\"background:#fff3f2;\">5 \u2013 20 Liters<\/td>\n<td>2 \u2013 10 Liters<\/td>\n<td>0.3 \u2013 2.5 Liters<\/td>\n<td>0.3 \u2013 1.5 Liters<\/td>\n<td>0.3 \u2013 2.0 Liters<\/td>\n<\/tr>\n<tr>\n<td>Acetaldehyde (AA) Content<\/td>\n<td style=\"background:#fff3f2;\">&lt; 1.5 ppm<\/td>\n<td>&lt; 1.5 ppm<\/td>\n<td>&lt; 1.5 ppm<\/td>\n<td>&lt; 1.0 ppm<\/td>\n<td>&lt; 1.0 ppm<\/td>\n<\/tr>\n<tr>\n<td>Food Grade Approved<\/td>\n<td style=\"background:#fff3f2;\">&#x2705; Yes<\/td>\n<td>&#x2705; Yes<\/td>\n<td>&#x2705; Yes<\/td>\n<td>&#x2705; Yes<\/td>\n<td>&#x2705; Yes<\/td>\n<\/tr>\n<tr>\n<td>Polymerization Technology<\/td>\n<td style=\"background:#fff3f2;\">SSP (Extended)<\/td>\n<td>SSP<\/td>\n<td>SSP<\/td>\n<td>SSP<\/td>\n<td>SSP<\/td>\n<\/tr>\n<tr>\n<td>Melting Point (\u00b0C)<\/td>\n<td style=\"background:#fff3f2;\">245 \u2013 255<\/td>\n<td>245 \u2013 255<\/td>\n<td>245 \u2013 255<\/td>\n<td>245 \u2013 255<\/td>\n<td>245 \u2013 255<\/td>\n<\/tr>\n<tr>\n<td>Density (g\/cm\u00b3)<\/td>\n<td style=\"background:#fff3f2;\">1.38 \u2013 1.40<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<td>1.38 \u2013 1.40<\/td>\n<\/tr>\n<tr>\n<td>Performance Tier<\/td>\n<td style=\"background:#fff3f2;\">Premium (Ultra-High IV)<\/td>\n<td>Advanced (High IV)<\/td>\n<td>Specialized (CSD-Optimized)<\/td>\n<td>Standard+ (Water-Grade)<\/td>\n<td>Standard (General-Purpose)<\/td>\n<\/tr>\n<tr>\n<td>Selection Guide<\/td>\n<td style=\"background:#fff3f2;\">5\u201320L carboys, heavy industrial, deep lightweighting<\/td>\n<td>Wide-mouth jars, 2\u201310L bottles<\/td>\n<td>Carbonated soft drinks, beer, sparkling water<\/td>\n<td>Still mineral water, drinking water<\/td>\n<td>General-purpose bottles, baseline converting<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div class=\"mpg-note\">\n<p style=\"margin-top:0;\">\n            <strong>Selection Guide:<\/strong> For container volumes above 5 liters or aggressive <strong>lightweighting programs<\/strong> requiring structural integrity, BG845 is the recommended choice. For standard 2-to-10-liter containers, BG825 offers a balanced commercial alternative. Contact our technical team for custom grade matching.\n        <\/p>\n<\/p><\/div>\n<h2>Pre-Production Operator Checklist<\/h2>\n<div class=\"mpg-process-box\">\n<h4>Pre-Processing Quality Control Checklist for PET BG845<\/h4>\n<ul style=\"line-height:2.0; padding-left: 20px;\">\n<li>&#x2705; <strong>Moisture Verification:<\/strong> Ensure resin moisture is below 30 ppm prior to extruder intake.<\/li>\n<li>&#x2705; <strong>Dryer Temperature:<\/strong> Set desiccant dryer to 160\u2013170\u00b0C (under-drying causes hydrolysis; overheating causes surface oxidation).<\/li>\n<li>&#x2705; <strong>Dryer Dew Point:<\/strong> Confirm dew point is $\\leq -40\\text{\u00b0C}$.<\/li>\n<li>&#x2705; <strong>Residence Time:<\/strong> Maintain 4\u20136 hours drying time (closer to 6 hours for high-IV BG845).<\/li>\n<li>&#x2705; <strong>Hopper Purging:<\/strong> Use dry nitrogen or dry air purge in the feed hopper to prevent moisture re-absorption.<\/li>\n<li>&#x2705; <strong>Melt Temperature:<\/strong> 270\u2013290\u00b0C \u2014 never exceed 295\u00b0C to avoid thermal degradation and elevated acetaldehyde.<\/li>\n<li>&#x2705; <strong>Hot Runner Maintenance:<\/strong> Ensure regular cleaning of screws and hot runners to eliminate dead zones and black specks.<\/li>\n<li>&#x2705; <strong>Preform Mold Chilling:<\/strong> Set chiller water to 6\u201312\u00b0C for rapid amorphous preform quenching.<\/li>\n<li>&#x2705; <strong>Blow Temperature:<\/strong> Maintain preform reheat temperature at 95\u2013110\u00b0C to prevent pearlescence or thermal haze.<\/li>\n<li>&#x2705; <strong>Blowing Pressure:<\/strong> Regulate blow pressure (typically 20\u201340 bar) aligned with stretch ratios and preform designs.<\/li>\n<\/ul><\/div>\n<h2>Competitive Advantage: Why Procure BG845 from MizanPetroGas?<\/h2>\n<p>\n        PET BG845 is a critical raw material in industrial packaging manufacturing. <strong>MizanPetroGas<\/strong> provides direct factory sourcing from <strong>Shahid Tondgooyan Petrochemical<\/strong>, supplying original material backed by <strong>official manufacturer Certificates of Analysis (COA)<\/strong>, standard palletized packaging, and complete technical consulting. Our polymer engineers assist with machine parameter optimization, defect troubleshooting, and precise resin qualification.\n    <\/p>\n<div class=\"mpg-highlight\">\n        <strong>Direct Supply from Shahid Tondgooyan Petrochemical | Guaranteed Authenticity | Nationwide &amp; Export Delivery | Dedicated Technical Support<\/strong>\n    <\/div>\n<h2>Frequently Asked Questions (FAQ)<\/h2>\n<h3>1. What is the main difference between BG845 and BG825, and which should I choose?<\/h3>\n<p>\n        The key difference is the <strong>Intrinsic Viscosity (IV)<\/strong>: BG845 provides an IV of 0.84\u20130.88 dL\/g compared to 0.82\u20130.86 dL\/g for BG825. This increase translates to <strong>longer polymer chains and enhanced mechanical load-bearing capacity<\/strong>. Choose BG845 for <strong>5-to-20-liter carboys<\/strong>, heavy industrial containers, or projects requiring <strong>wall thickness reduction (lightweighting)<\/strong>. For standard 2-to-10-liter containers and general jars, BG825 is an economical option.\n    <\/p>\n<h3>2. Can I blend BG845 with other PET grades?<\/h3>\n<p>\n        Blending resins with different IV ratings is <strong>not recommended<\/strong>. Blending dissimilar grades causes a <strong>broad, bimodal molecular weight distribution<\/strong> and melt viscosity fluctuations, leading to processing instability and uneven wall thickness. If blending is unavoidable, perform pilot trials and review results with our technical specialists.\n    <\/p>\n<h3>3. Is BG845 suitable for Carbonated Soft Drink (CSD) bottles?<\/h3>\n<p>\n        No. For carbonated beverages, <strong>BG821 (BG-820 S)<\/strong> is optimized with an appropriate IV (0.80\u20130.84 dL\/g) and enhanced $CO_2$ barrier retention. BG845 is over-engineered for small carbonated beverage containers and its higher viscosity can create processing challenges on high-speed CSD blow-molding lines.\n    <\/p>\n<h3>4. What are the Minimum Order Quantities (MOQ) and delivery terms?<\/h3>\n<p>\n        MOQ, logistics schedules, and pricing are coordinated based on allocation volumes and delivery locations. Contact our commercial department for <strong>official proforma invoices<\/strong>, current stock availability, and multimodal freight arrangements.\n    <\/p>\n<h3>5. Does MizanPetroGas provide technical line-setup support for BG845?<\/h3>\n<p>\n        Yes. Our polymer technical support team assists clients with <strong>injection and blow-molding parameter setup<\/strong>, troubleshooting molding defects (such as haze, pearlescence, gate crystallization, or stress whitening), and optimizing production cycles.\n    <\/p>\n<h2>Summary<\/h2>\n<p>\n        <strong>Polyethylene Terephthalate Grade 845 (PET BG845)<\/strong> represents the highest standard in bottle-grade PET resins. Engineered by Shahid Tondgooyan Petrochemical with the <strong>highest intrinsic viscosity<\/strong> in standard bottle grades, it serves manufacturers of <strong>large-format carboys, heavy industrial containers, large food jars, and lightweighted packaging<\/strong>. <strong>MizanPetroGas Company<\/strong> supplies this premium polymer with <strong>guaranteed authenticity, competitive pricing, and full technical support<\/strong>.\n    <\/p>\n<div class=\"mpg-cta\">\n<h2 style=\"color:#fff; border-bottom: none; margin-top: 0;\">Procure PET BG845 \u2014 Request Official Quotation<\/h2>\n<p style=\"font-size:1.1em; margin: 14px 0;\">Our polymer sales team provides technical consulting, real-time market pricing, and immediate order fulfillment.<\/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},"excerpt":{"rendered":"<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<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 BG845<\/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>845 (Bottle Grade \u2014 High IV)<\/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","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":[249,250],"class_list":{"0":"post-4557","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-249","10":"product_tag-bg845","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"acf":[],"brands":[],"_links":{"self":[{"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product\/4557","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=4557"}],"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=4557"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/pwb-brand?post=4557"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_brand?post=4557"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_cat?post=4557"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mizanpetrogas.com\/en\/wp-json\/wp\/v2\/product_tag?post=4557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}