GB/T 23854-2019 English PDF

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GB/T 23854-2019: Bromochloro-5, 5-dimethylhydantoin
Status: Valid

GB/T 23854: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23854-2019	199	Add to Cart	3 days	Bromochloro-5, 5-dimethylhydantoin	Valid
GB/T 23854-2009	479	Add to Cart	3 days	Bromochloro-5, 5-dimethylhydantoin	Obsolete

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Basic data

Standard ID: GB/T 23854-2019 (GB/T23854-2019)
Description (Translated English): Bromochloro-5, 5-dimethylhydantoin
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G77
Classification of International Standard: 71.100.35
Word Count Estimation: 10,126
Date of Issue: 2019-08-30
Date of Implementation: 2020-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 23854-2019: Bromochloro-5, 5-dimethylhydantoin

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Bromochloro-5, 5-dimethylhydantoin ICS 71.100.35 G77 National Standards of People's Republic of China Replace GB/T 23854-2009 Published on.2019-08-30 2020-07-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 23854-2009 "Bromochlorohydantoin", compared with GB/T 23854-2009, except for editorial modifications The changes are as follows. --- Added the normative reference document "GB 6944-2012 Dangerous Goods Classification and Product Name Number" (see Chapter 2); --- Added "terms and definitions" (see Chapter 4); --- Removed the chromaticity and its determination method (see Tables 1 and 4.4 of the.2009 edition); --- Removed chloroform insolubles and their determination methods (see Tables 1 and 4.5 of the.2009 edition); - Potentiometric titration was added to the method for determining the content of bromochlorohydantoin (see 6.2.1); --- Change the "bromine content" to "active bromine content", the measurement method is changed from the volume method to the potentiometric titration method (see Tables 1 and 6.3,.2009 edition) 4.2); --- Change the "chlorine content" to "active chlorine content", the measurement method is changed from the volume method to the potentiometric titration method (see Tables 1 and 6.3,.2009 edition) 4.2); --- Increased the content of inactive chlorine (in terms of NaCl) and its determination method (see Tables 1 and 6.3); ---Adjusted packaging, storage conditions and extended product shelf life (see Chapter 8, Chapter 6 of the.2009 edition); --- Removed the security prompt, adjusted its content to adjust to warning (see Chapter 7 of the.2009 edition). This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Chemical Standardization Technical Committee (SAC/TC63). This standard was drafted. Shandong Longkou Keda Chemical Co., Ltd., Guangzhou Special Pressure Equipment Testing and Research Institute, Anhui Zhengchao Testing Technology Co., Ltd., Tianjin Haihua Environmental Engineering Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., China Petrochemical Co., Ltd. Company Beijing Beihua Institute Yanshan Branch, Jiashan Green Field Environmental Protection Material Factory. The main drafters of this standard. Sun Yifeng, Liu Jiaqing, Liu Luzhen, Wang Yilin, Shao Hongqian, Fan Dayong, Zhang Weiqiang, Zhu Chunlian, Guo Dengyuan, Lin Jing. The previous versions of the standards replaced by this standard are. ---GB/T 23854-2009. Bromochlorohydantoin Warning - bromochlorohydantoin belongs to class 5.1 oxidizing substances and class 8 corrosive substances specified in GB 6944-2012, for skin and The eyes are irritating and corrosive. Operators should wear rubber acid and alkali resistant gloves and protective glasses and masks when working, avoiding straight skin Contact. This standard does not address all possible security issues. The user is responsible for taking appropriate safety and health measures and guarantees The conditions stipulated by relevant national laws and regulations.

1 Scope

This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of bromochlorohydantoin. This standard applies to bromochlorohydan prepared by halogenation of 5,5-dimethylhydantoin, mainly used in industrial circulating water, oilfield water injection, and life. Bactericidal and algae-killing of sewage and landscape recreation water, can also be used for disinfection and disinfection of swimming pools, medical sewage, food processing and storage, aquaculture Anti-epidemic disinfection, etc.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB 190 dangerous goods packaging mark Preparation of GB/T 601 chemical reagent standard titration solution Preparation of preparations and products used in GB/T 603 chemical reagent test method General rules for sampling GB/T 6678 chemical products GB/T 6682 Analytical laboratory water specifications and test methods GB 6944-2012 Classification of dangerous goods and product name GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values General technical requirements for GB/T 8946 plastic woven bags

3 chemical formula

3.1 Molecular formula C5H6BrClN2O2 Relative molecular mass. 241.5 (according to.2016 international relative atomic mass). 3.2 Structural formula ......

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