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GB/T 2899-2017: Barium sulphate precipitated 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 2899: Historical versions
GB/T 2899-2017: Barium sulphate precipitated 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/GBT2899-2017NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.060.50 G 12 Replacing GB/T 2899-2008 Barium sulphate precipitated for industrial use Issued on. NOVEMBER 01, 2017 Implemented on. MAY 01, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Molecular formula and relative molecular mass... 5 4 Requirements... 5 5 Test method... 6 6 Inspection rules... 15 7 Markings and labels... 16 8 Packaging, transportation and storage... 16ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 2899-2008 "Barium sulphate precipitated for industrial use". Compared with GB/T 2899-2008, the main technical changes except for editorial changes are as follows. - ADD the index and test method of sulfide content (see 4.2 and 5.11); - ADJUST the requirements of barium sulfate, volatiles at 105 °C, iron, whiteness, fineness index (see 4.2; 4.2 of the 2008 edition); - MODIFY the particle size distribution to the median particle size and ADJUST the index requirements (see 4.2; 4.2 of the 2008 edition). 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 Inorganic Chemical Sub-Committee (SAC/TC 63/SC 1). Drafting organizations of this standard. Zhejiang Shuizhiyin Environmental Protection Technology Co., Ltd., Hefei Qingqing Water Treatment Co., Ltd., Shenzhou Jiaxin Chemical Co., Ltd., Weifang Dayao New Materials Co., Ltd., Nanfeng Chemical Group Co., Ltd. Barium Salt Branch, Shaanxi Fuhua Chemical Co., Ltd., Shandong Huayan New Materials Co., Ltd., Qingdao Red Star Chemical Group Co., Ltd., Hejin Hongji Powder Material Co., Ltd., Hebei Yudong Paint Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute Co., Ltd. The main drafters of this standard. Yu Minghua, Liu Xianlin, Ren Kuo, Wang Qiang, Zhang Tiezhu, Bai Junsheng, Gao Tongzhen, Jia Daofeng, Qiao Zhenjie, Wang Lizhu, Chen Aibing, Sun Yuezong, Chang Guangxi, Wang Xiaonan, Li Xia. This standard replaces the standard previously issued as follows. - GB/T 2899-1982, GB/T 2899-1996, GB/T 2899-2008. Barium sulphate precipitated for industrial use1 ScopeThis standard specifies the requirements, test methods, inspection rules, markings, labels, packaging, transportation and storage of barium sulphate precipitated for industrial use. This standard applies to barium sulphate precipitated for industrial use. This product is mainly used in coatings, inks, pigments, rubber, batteries, plastics and coated paper, metal smelting and other industries.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/T 191-2008 Packaging - Pictorial marking for handling of goods GB/T 1717-1986 Determination of pH value of an aqueous suspension of pigments GB/T 3049-2006 Chemical products for industrial use. General method for determination of iron content - 1, 10-Phenanthroline spectrophotometric method GB/T 5211.2 Determination of matter soluble in water of pigments-Hot extraction method GB/T 5211.3 Determination of matter volatile of pigments at 105 °C GB/T 5211.15-2014 General test methods for pigments and extender pigments - Part 15.Determination of oil absorption3 Molecular formula and relative molecular mass Molecular formula. BaSO4.Relative molecular mass. 233.34 (according to 2016 international relative atomic mass).4 Requirements4.1 Appearance. White powder.5 Test methodWarning - Persons using this standard shall have practical experience in formal laboratory work. This standard does not point out all possible safety issues. 5.1 General provisions The reagents and water used in this standard refer to, unless otherwise specified, analytically pure reagents and grade-3 water as specified in GB/T 6682-2008.The standard titration solutions, preparations and products used in the test are prepared according to the provisions of HG/T 3696.1-2011 and HG/T 3696.3 unless otherwise specified. 5.3 Determination of barium sulfate content 5.3.1 Principle The specimen and the mixture of sodium carbonate and potassium carbonate are melted at high temperature. The barium sulfate is converted into barium carbonate. The barium carbonate is dissolved by hydrochloric acid solution to produce barium chloride; then determined by the barium sulfate gravimetric method. 5.3.2 Reagents or materials 5.3.4 Test procedure Weigh about 1 g of the specimen which had been dried according to 5.4, accurate to 0.0002 g. Place it in a platinum crucible into which 4 g of molten mixture has been added. Mix it uniformly. Then cover another 4 g of molten mixture above it and close the lid. Place the platinum crucible in a high- temperature electric furnace. Melt it at 800 °C ± 20 °C for 40 min. Take it out to cool it down. 5.4 Determination of volatile matter at 105 °C Operate according to GB/T 5211.3.The calculation result is represented in two decimal places. 5.5 Determination of water soluble content Weigh about 10 g of specimen, accurate to 0.01 g. Operate according to GB/T 5211.2.The calculation result is represented in two decimal places. 5.6 Determination of iron content 5.6.1 Principle Same as Chapter 3 of GB/T 3049-2006. 5.6.2 Reagents or materials 5.6.3 Instrument and equipment Spectrophotometer, which is equipped with cuvette with optical path of 4 cm. 5.6.4 Test procedure 5.8 Determination of oil absorption 5.8.1 Reagents or materials Same as Chapter 4 of GB/T 5211.15-2014. 5.8.2 Instrument and equipment Same as Chapter 5 of GB/T 5211.15-2014. 5.9 Determination of pH 5.9.1 Reagents or materials Same as Chapter 1 of GB/T 1717-1986. 5.9.2 Instrument and equipment Same as Chapter 2 of GB/T 1717-1986. 5.9.3 Test procedure Weigh 10 g ± 0.01 g of specimen. Place it in a glass container. Add 90 mL of carbon dioxide-free water. Operate according to Chapter 3 of GB/T 1717-1986, but change the shaking time from 1 min into 2 min and standing time from 5 min to 10 min. 5.10 Determination of fineness6 Inspection rules6.1 This standard uses type inspection and exit-factory inspection. Type inspection and exit-factory inspection shall meet the following requirements. 6.2 The barium sulphate precipitated for industrial use of the same grade as produced continuously (or by the same shift) by the manufacturer using the same materials, basically the same production conditions form a batch. Each batch of products does not exceed 120 t. 6.3 Determine the number of sampling units according to the provisions of GB/T 6678.When sampling, the sampler is inserted vertically from the center of the packaging bag to sample at 3/4 of the depth of the material layer. 6.4 If an index of inspection results does not meet the requirements of this standard, it shall take sample from twice the amount of packaging for re- inspection. If an index of the re-inspection does not meet the requirements of this standard, the entire batch of products is unqualified.7 Markings and labels7.1 There shall be a firm and clear mark on the packing bag of the barium sulfate precipitated for industrial use. The content of marking includes manufacturer name, factory address, product name, grade, net content, batch number (or production date), this standard number, the markings of “Avoid sun exposure” or “Avoid rain” as specified in GB/T 191-2008.8 Packaging, transportation and storage8.1 Barium sulphate precipitated for industrial use is packed in double layers. The inner packaging uses polyethylene plastic film bags; the outer packaging uses plastic woven bags. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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