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GB/T 6820-2016: Ethanol for industrial use Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 6820: Historical versions
GB/T 6820-2016: Ethanol for industrial use---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT6820-2016NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.080.60 G 17 Replacing GB/T 6820-1992 Ethanol for industrial use Issued on. DECEMBER 13, 2016 Implemented on. JULY 01, 2017 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Product categories... 6 4 Requirements... 6 5 Test methods... 7 6 Inspection rules... 13 7 Marking, packaging, storage and transportation... 14 8 Safety... 15 Appendix A (Normative) Typical gas chromatograms and retention times for the determination of methanol, isopropanol, n-propanol, acetate, C4 + C5 alcohols ... 17ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 6820-1992 “Industrial synthesis of ethanol”. As compared with GB/T 6820-1992, the main technical changes are as follows. - MODIFY the standard name to “Ethanol for industrial use”; - MODIFY the scope of application (see Chapter 1; Chapter 1 of the 1992 edition); - ADD the 99.5% ethanol type (see Chapter 3); - The index of 95.0% ethanol type is divided into three grades. superior, first- grade, qualified products. ADD four items. isopropyl alcohol, n-propanol, acetate, sulfuric acid test chroma. MODIFY the original fusel oil item into a C4 + C5 alcohol item. MODIFY the first-class chromaticity product from No.10 to No.5.MODIFY the volume fraction of the ethanol content of first- class product from 96.0% to 95.0%. MODIFY the acid content of the superior product from 0.0020% to 10 mg/L; MODIFY the acid content of the first-class product from 0.0025% to 20 mg/L. For the aldehyde content. MODIFY it from 0.0020% to 10 mg/L for superior product and from 0.0040% to 15 mg/L for the first-class product. For the methanol content. MODIFY it from 0.02% to 100 mg/L for superior product and from 0.03% to 150 mg/L for the first-class product. For the oxidation time of potassium permanganate. MODIFY it from 20 min to 25 min for superior product and from 15 min to 20 min for the first-class product. For the evaporative residue. MODIFY it from 0.0025% to 20 mg/L for superior product and from 0.0030% to 25 mg/L for the first-class product (see Table 1; Table 1 of the 1992 edition); - ADD the gas chromatography test methods for methanol and C4 + C5 alcohol item (see 5.8); - ADD the type inspection items. evaporative residues, sulfuric acid test chroma, water miscibility tests were determined as type inspection items (see 6.1). This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard shall be under the jurisdiction of the National Chemical Standardization Technical Committee Organic Chemical Branch (SAC/TC 63/SC 2). Drafting organizations of this standard. Jiangsu Thorpe (Group) Co., Ltd., Celanese (Nanjing) Acetyl Intermediate Co., Ltd., China Petroleum and Chemical Corporation Beijing Research Institute of Chemical Industry, Jiangsu Product Quality Supervision and Inspection Institute. Participated drafting organizations of this standard. Kai Ling Chemical (Zhangjiagang) Co., Ltd. The main drafters of this standard. Hu Zonggui, Ge Lixin, Sun Cheng, Wu Zhongping, Qin Ronglin, Gao Wei, Huang Yu, Mao Zhiwang, Li Jieli, Wang Xinhua. This standard replaces the standards previously issued as follows. - GB 6820-1986, GB/T 6820-1992. Ethanol for industrial use1 ScopeThis standard specifies the product classification, requirements, test methods, inspection rules and signs, packaging, storage, transportation and safety of ethanol for industrial use. This standard applies to ethanol for industrial use. Molecular formula. C2H5OH Structural formula. Relative molecular mass. 46.07 (according to international relative atomic mass in 2011)2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB 190 Packing symbol of dangerous goods GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 394.2-2008 General methods of analysis for ethanol GB/T 601 Chemical reagent - Preparations of standard volumetric solutions GB/T 602 Chemical reagent - preparations of standard solutions for impurity GB/T 603 Chemical reagent - Preparations of reagent solution for use in test GB/T 3723 Sampling of chemical products for industrial use - Safety in sampling GB/T 6283 Chemical products - Determination of water Karl Fischer method (general method)3 Product categoriesEthanol for industrial use is divided into 95.0% ethanol and 99.5% ethanol.4 Requirements4.1 Appearance. transparent liquid, no visible mechanical impurities. 4.2 Ethanol for industrial use shall meet the requirements of Table 1.5 Test methodsWarning. Some test procedures specified in the test method may lead to dangerous situations, so the operator shall take appropriate safety and health measures. 5.1 General provisions The reagents and water used in this standard refer to analytical pure and grade III water as specified in GB/T 6682 unless otherwise specified. Standard titration solutions, impurity standard solutions, preparations and products used in the analysis were prepared in accordance with the provisions of GB/T 601, GB/T 602, GB/T 603. 5.7 Determination of aldehyde content Determine it according to the method specified in Chapter 8 of GB/T 394.2- 2008.Use the iodine method as the arbitration method. 5.8 Determination of methanol, isopropanol, n-propanol, acetate, C4 + C5 alcohol content 5.8.1 Summary of method Use gas chromatography, under the selected chromatographic conditions, to separate the specimen by a chromatographic column. Use a hydrogen flame ionization detector to detect it. Use the internal standard method, external standard method, or corrected area normalization method to quantify it. Among them, use the internal standard method as the arbitration method. 5.8.2 Reagents and solutions 5.8.2.4 Nitrogen. The volume fraction is not less than 99.95%; it is dried and purified by silica gel and molecular sieve. 5.8.2.5 Hydrogen. The volume fraction is not less than 99.9%; it is dried and purified by silica gel and molecular sieve. 5.8.2.6 Air. It is dried and purified by silica gel and molecular sieve. 5.8.3 Instruments and equipment 5.8.3.1 Gas chromatograph. It adopts a hydrogen flame ionization detector and is equipped with a capillary chromatographic column. The sensitivity and stability of the whole machine comply with the relevant requirements in GB/T 9722. 5.8.3.2 Micro-syringe. 10 μL. 5.9 Determination of oxidation time of potassium permanganate Determine it according to the method as specified in Chapter 7 of GB/T 394.2- 2008. 5.10 Determination of evaporation residue Determine it according to GB/T 6324.2. Take the arithmetic mean of the two parallel determination results as the determination result. The difference between the two parallel determination results is not greater than 2 mg/L. 5.11 Determination of chroma in sulfuric acid test Determine it according to the method specified in Chapter 6 of GB/T 394.2- 2008.6 Inspection rules6.1 Inspection is divided into exit-factory inspection and type inspection. The appearance and the chromaticity, ethanol, acid, aldehyde, methanol, isopropanol, n-propanol, acetate, C4 + C5 alcohol, oxidation time of potassium permanganate and moisture in Table 1 are the exit-factory inspection items and shall be inspected batch by batch. In the case of normal production, type inspection shall be carried out at least once a month. Type inspection shall also be carried out in one of the following cases. 6.2 Under the condition of unchanged raw materials and processes, the actual batch of continuous production of the product is a batch, but the time for several production batches to constitute an inspection batch usually does not exceed 1 d. 6.3 Sampling of ethanol for industrial use shall be conducted in accordance with GB/T 3723, GB/T 6678, GB/T 6680.The total amount of samples taken shall not be less than 2 L. After mixing the samples evenly, put them in two clean; 6.4 The test result shall be determined according to the rounded value comparison method in GB/T 8170.7 Marking, packaging, storage and transportation7.1 Marking 7.1.1 There shall be clear markings on the packaging containers of ethanol for industrial use; their contents shall include at least. 7.1.2 Ethanol for industrial use is inspected by the quality inspection department of the manufacturer. The manufacturer shall ensure that each batch of exit- factory products meets the requirements of this standard and is accompanied by a quality certificate in a certain format, which includes. 7.2 Packaging Ethanol for industrial use shall be stored in a clean, dry steel tanker or other container that can guarantee quality. 7.3 Storage Ethanol for industrial use shall be stored in a cool, dry, ventilated environment which is isolated from heat sources and fires.8 Safety8.1 Warning of danger Ethanol for industrial use is an irritating, flammable liquid. The melting point is - 114.3 °C; the boiling point is 78.4 °C; the flash point is 12 °C; the ignition temperature is 363 °C. Its vapor and air may form explosive mixture; the explosion limit is 3.3% (volume fraction) ~ 19.0% (volume fraction). 8.2 Safety measures 8.2.1 It shall avoid ethanol for industrial use to be contact with the skin. If splashed on the skin or eyes, it shall be quickly rinsed with a lot of water, and then seek medical treatment immediately. 8.2.2 Fire extinguishing agent. Anti-solvent foam, dry powder, carbon dioxide. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 6820-2016 be delivered?Answer: The full copy PDF of English version of GB/T 6820-2016 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 6820-2016_English with my colleagues?Answer: Yes. 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