GB 338-2011 PDF EnglishUS$140.00 · In stock · Download in 9 seconds
GB 338-2011: [GB/T 338-2011] Methanol 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 338: Historical versions
GB 338-2011: [GB/T 338-2011] Methanol 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/GB338-2011GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.080.60 G 16 Replacing GB 338-2004 Methanol for industrial use Issued on. DECEMBER 05, 2011 Implemented on. AUGUST 01, 2012 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Requirements... 6 4 Test methods... 7 5 Inspection rules... 11 6 Marking, packaging, transportation and storage... 12 7 Safety... 12 Annex A (Informative) Contrast list between the chapters and articles number in this Standard and those in ASTM D1152.2006... 14 Annex B (Normative) Calculation of the mass fraction of methanol... 15 Annex C (Informative) Correction calculation of full immersion thermometer and mercury manometer... 16 Annex D (Normative) Determination of ethanol content in methanol for industrial use – Gas chromatography... 17ForewordProvisions in Chapter 6.1 of this Standard are mandatory, and the others are recommendatory. This Standard is drafted according to the rules given in GB/T 1.1-2009. This Standard replaces GB 338-2004 Industrial Methanol. Compared with GB 338-2004, the main technical changes in this Standard are as follows. — Modified the preparation method of this Standard colorimetric solution used for the potassium permanganate time test (see Chapter 4.7 of this edition; and Chapter 4.4 of Edition 2004); — Added the correction formula for the readings of the full immersion thermometer and the mercury barometer used in the boiling range determination method (see Annex C of this edition); — Modified the test method for the determination of ethanol content (see Chapter 4.14, Annex D of this edition; and Chapter 4.11 of Edition 2004); — Modified the factory inspection items (see Chapter 5.1 of this edition; and Chapter 5.1 of Edition 2004). Using re-drafting method, this Standard modifies-adopts the American Society for Testing Materials standard ASTM D1152.2006 Methanol. Compared with ASTM D1152.2006, there are adjustments on the structure. Annex A lists out the Contrast List between chapter and article number in this Standard and ASTM D1152.2006.The technical differences and their reasons between this Standard and the ASTM D1152.2006 are as follows. — Indicators are divided into superior products, first-class products and qualified products (see Chapter 3.2). Which is determined based on the classification guideline of the relevant industrial products in China; — Added the water miscibility item and the ethanol content item (see Chapter 3.2). This is to strictly control the product quality; — The color scale, boiling range, acid or alkali and other indicators of the superior products are better than those specified in ASTM D1152.2006 (see Chapter 3.2); — In addition to the use of the method specified in the ASTM D1152.2006 for the sulfuric acid washing test, other test methods all adopt the national standards for products testing method of China (see Chapter 4). This Standard was proposed by China Petroleum and Chemical Industry Federation. This Standard shall be under jurisdiction of Branch of Organic Chemicals of National Standardization Technical Committee of Chemical (SAC/TC 63/SC 2). Drafting organization of this Standard. Sinopec Sichuan Vinylon Works Group. Participating drafting organizations of this Standard. Shanghai Coking & Chemical Corporation, Shaanxi Yulin Natural Gas Chemical Industry Co., Ltd., Jiangsu SOPO (Group) Co., Ltd., Methanol Branch of Daqing Oilfield Chemicals Co., Ltd., Zhejiang Jinju Chemical Co., Ltd. and Guizhou Yihua Chemical Industry Co., Ltd. Main drafters of this Standard. Yan Hong, Pu Lijun, Li Bin, Zhai Li, Zhou Bing, Lu Jiayun, Zeng Yan, Zhai Xiaoxia, Wang Shumei, Ge Lixin, Zhang Xueyong, Lan Yuandong, Yang Hongmei. The previous editions replaced by this Standard are as follows. — GB 338-1964, GB 338-1976, GB 338-1985, GB 338-1992, GB 338-2004. Methanol for Industrial Use1 ScopeThis Standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage and safety of the methanol for industrial use. This Standard applies to the methanol for industrial use compounded by coal, natural gas, light oil and heavy oil as the materials. Molecular formula. CH4O Relative molecular mass. 32.042 (according to the international relative atomic mass in 2007)2 Normative referencesThe articles contained in the following documents have become part of this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (including all corrections) or revisions made thereafter shall be applicable to this Standard. GB 190 Packing symbol of dangerous goods GB/T 601 Chemical reagent - Preparations of standard volumetric solutions GB/T 603 Chemical reagent - Preparations of reagent solutions for use in test methods (GB/T 603-2002, ISO 6353-1.1982, NEQ) GB/T 3143 Color determination method of liquid chemicals (Hazen unit; Platinum-cobalt scale) GB/T 4472 Determination of density and relative density for chemical products GB/T 6283 Chemical products - Determination of water Karl ·fischer method (general method) (GB/T 6283-2008, ISO 760.1978, NEQ) GB/T 6324.1 Test method of organic chemical products - Part 1.Water miscibility test of liquid organic chemical products GB/T 6324.2 Test method of organic chemical products - Part 2.Determination of dry residue after evaporation on a water bath for volatile organic liquids (GB/T 6324.2-2004, ISO 759.1981, MOD) GB/T 6324.3-2011 Test method of organic chemical products - Part 3.Determination of permanganate-reducing substances GB/T 6324.5-2008 Test method of organic chemical products - Part 5.Determination of trace quantities of carbonyl compounds in organic chemicals3 Requirements3.1 Character. Colorless clear liquid, without peculiar smell and odor, and without visible impurities. 3.2 Methanol for industrial use shall meet the technical requirements shown in Table 1.4 Test methods4.1 Warning Some processes specified by the test method may lead to dangerous situations, so the operator shall take appropriate safety and protective measures. 4.2 General provisions Unless otherwise specified, only confirmed analytically pure reagent and Grade-3 water met the GB/T 6682 are used in the analysis. If there is no other requirements noted, the standard titration solution, preparations and products used in the analysis shall be prepared in accordance with provisions of GB/T 601 and GB/T 603. 4.6 Determination of boiling range It shall be conducted according to the method specified in GB/T 7534.Distillation flask is of 100mL; indication range of the thermometer is 50°C - 70°C, with the division value of 0.1°C. For the correction of the full immersion thermometers and mercury manometer, see Annex C. 4.10 Determination of acid or alkali content 4.10.1 Method summary The specimen is diluted by water that does not contain carbon dioxide, with the bromothymol blue as indicator; 4.10.4 Analytical procedures 4.11 Determination of carbonyl compounds content It shall be conducted according to the specified provisions of 4.2 in GB/T 6324.5-2008. Wherein the wavelength is 430 nm; Mass fraction w2 of carbonyl compounds [calculated by formaldehyde (HCHO)], the value is expressed in %, calculated according to Equation (3). 4.14 Determination of ethanol content It shall be conducted according to the method specified in Annex D.5 Inspection rules5.1 All items listed in this Standard are type inspection items, of which color scale, density, boiling range, potassium permanganate test, moisture and acid (or alkali) are factory inspection items. Under the normal production situation, type inspection shall be conducted at least for one time in every month. 5.2 Methanol for industrial use shall be inspected by the mass inspection department. The manufacturer ensures that the manufactured methanol for industrial use complies with the requirements of this Standard. 5.3 Under the condition that raw materials and process are not changed, the actual batch of continuously produced products is deemed as a group-batch; however, the time of several group-batches constituting an inspection batch is usually less than one week.6 Marking, packaging, transportation and storage6.1 Packaging containers of methanol for industrial use shall be coated with firm marking, with the contents including manufacturer name, product name, this Standard number, and the “Flammable Liquid” and “Poisonous Substance” marking specified by GB 190. 6.2 The methanol for industrial use shall be packaged with clean and dry containers, and packaging containers shall be strictly sealed. 6.4 The methanol for industrial use shall be stored dry, ventilated and cool places which are away from sun exposure, heat and fire.7 Safety7.1 Warning against danger. Methanol is a kind of colorless, flammable liquid with a flash point of 8°C, auto-ignition temperature of 436°C. The volume fraction of explosion range in air for the methanol vapor is 6% - 36.5%. Methanol vapor has stimulation on nervous system, if inhaled; 7.2 Safety measures. Wash with water immediately if methanol spills out. When methanol catches fire, put out fire with sand, foam extinguisher, asbestos cloth, etc.. Avoid methanol contact with skin; ......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 338-2011 be delivered?Answer: The full copy PDF of English version of GB 338-2011 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 338-2011_English with my colleagues?Answer: Yes. The purchased PDF of GB 338-2011_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB 338-2011 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB 338-2011?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 338-2011 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB 338-2011?A step-by-step guide to download PDF of GB 338-2011_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB 338-2011". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
