GB/T 24768-20091,4-Butanediol for industrial use (English PDF)

Foreword

Annex A of this Standard is normative.

This Standard was proposed by China Petroleum and Chemical Industry Association.

This Standard shall be under the jurisdiction of Subcommittee on Organic of National Technical Committee on Chemistry of Standardization Administration of China (SAC/TC 63 / SC2).

Main drafting organization of this Standard: Shanxi Three-dimensional Group Co., Ltd.

Participating drafting organizations of this Standard: Sichuan Tianhua Fubang Chemical Co., Ltd., Dongying Victory Central Asia Chemical Co., Ltd., Xinjiang Meike Chemical Co., Ltd., Nanjing Blue Star Chemical New Material Co., Ltd.

Main drafters of this Standard: Sun Zijin, Zhang Jianping, Liang Xiaoyuan, Yang Yumei, Ma Xiudong, Jia Yali, Xu Lianghui, Du Haiyan.

1 Scope

This Standard specifies the requirements, test methods, inspection rules and marks, packaging, transport and storage of 1,4-butanediol for industrial use.

This Standard is applicable to the production, inspection and sales of 1,4butanediol for industrial use.

Relative molecular mass: 90.15 (according to 2007 international relative atomic mass)

2 Normative references

The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.

GB/T 6682-2008, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987, MOD) GB/T 8170, Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9722-2006, Chemical reagent - General rules for the gas chromatography

3 Requirements

4 Test methods

5 Inspection rules

5.1 All items required in Clause 3 and specified in Table 1 are all exit-factory inspection items. The exit-factory inspection shall be performed in batches. 5.2 1,4-butanediol for industrial use takes the amount of a storage tank or tank car (ship) as one batch or the products of same mass as one batch. The sampling of 1,4-butanediol for industrial use shall be performed according to GB/T 6678, GB/T 6680. Take a representative sample with a sample volume of not less than 400 mL and pack in two clean, dry glass bottles, seal. Label it and indicate the product name, manufacturer's name, batch number or production date, sampling date, sampling location, sampler's name, etc. One bottle is for inspection, the other for future reference. 1,4-butanediol for industrial use shall be inspected by the quality supervision and inspection department of manufacturer. The manufacturer shall ensure that each batch of manufactured products conforms to the requirements of this Standard and is accompanied by a quality certificate in a certain format, including manufacturer's name and address, product name, product grade, production date or lot number, net content, and reference to this Standard. The determination of the test results is carried out according to the comparison method of repair value in GB/T 8170. […]

6 Marks, packaging, transport and storage

Annex A Typical chromatogram, relative retention, relative correction factor for

See Figure A.1 for typical chromatogram.

10 - 2-methyl-1,4-butanediol + unknown matter;

See Table A.1 for relative retention and relative correction factors for each component.