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GB/T 16983-2021: Chemical reagent - Dichloromethane
Status: Valid GB/T 16983: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16983-2021 | English | 119 |
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Chemical reagent - Dichloromethane
| Valid |
GB/T 16983-2021
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| GB/T 16983-1997 | English | 199 |
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Chemical reagent. Dichloromethane
| Obsolete |
GB/T 16983-1997
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PDF similar to GB/T 16983-2021
Basic data | Standard ID | GB/T 16983-2021 (GB/T16983-2021) | | Description (Translated English) | Chemical reagent - Dichloromethane | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G63 | | Word Count Estimation | 6,687 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 16983-2021: Chemical reagent - Dichloromethane---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.
Chemical reagent - Dichloromethane
ICS 71.040.30
CCSG63
National Standards of People's Republic of China
Replace GB/T 16983-1997
Chemical reagent dichloromethane
(ISO 6353-3.1987, Reagentsforchemicalanalysis-
Released on 2021-08-20
2022-03-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 16983-1997 "Chemical Reagent Dichloromethane", compared with GB/T 16983-1997, except for structural adjustments
In addition to editorial changes, the main technical changes are as follows.
---Changed the unit of acidity from "mmol/100g" to "mmol/g" (see Chapter 5, Chapter 4 of the.1997 edition);
---The technical requirements for moisture have been changed, and the analytical purity has been adjusted from "≤0.05%" to "≤0.03%" (see Chapter 5, Chapter 4 of the.1997 edition
chapter);
---Change the content determination method (see 6.2, 5.1 of the.1997 edition);
---The vibrating liquid densitometer method with increased density (see 6.4.2);
---Changed the packaging and markings (see Chapter 8, Chapter 7 of the.1997 edition).
This document uses the redrafting method to refer to R57 in ISO 6353-3.1987 "Chemical Analysis Reagents Part 3.Specification Second Series"
The "dichloromethane" compilation is non-equivalent to the degree of consistency with ISO 6353-3.1987.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the Chemical Reagent Subcommittee of the National Chemical Standardization Technical Committee (SAC/TC63/SC3).
Drafting organizations of this document. Jiangsu Qiangsheng Functional Chemical Co., Ltd., Beijing Chemical Reagent Research Institute Co., Ltd., Xi'an CCIC
Branch Testing and Certification Technology Co., Ltd.
The main drafters of this document. Gui Xianghong, Zhou Yi, Gu Yili, Han Baoying, Wang Yuhua, Zhao Jifei, Peng Hui, Wang Huan.
The previous versions of this document and the documents replaced are as follows.
---First published as GB/T 16983-1997 in.1997;
---This is the first revision.
Chemical reagent dichloromethane
Warning. Some test procedures specified in this document may lead to dangerous situations, and the user is responsible for taking appropriate safety and health measures.
1 Scope
This document specifies the technical requirements, test and inspection rules, packaging and marking of the chemical reagent methylene chloride.
This document is applicable to the inspection of the chemical reagent dichloromethane.
Molecular formula. CH2Cl2
Relative molecular mass. 84.93 (according to.2018 international relative atomic mass)
CAS Number. 75-09-2
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 601 Preparation of Standard Titration Solution for Chemical Reagents
GB/T 602 Preparation of standard solutions for impurity determination of chemical reagents
Preparation of preparations and products used in GB/T 603 chemical reagent test method
GB/T 605 General method for color determination of chemical reagents
GB/T 606 General method for moisture determination of chemical reagents Karl Fischer method
GB/T 611-2021 General method for density determination of chemical reagents
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 9722-2006 General Rules of Gas Chromatography for Chemical Reagents
GB/T 9723-2007 General Rules of Flame Atomic Absorption Spectrometry for Chemical Reagents
GB/T 9736-2008 General method for determination of acidity and alkalinity of chemical reagents
GB/T 9740 General method for determination of evaporation residue of chemical reagents
GB 15258 Regulations for the preparation of chemical safety labels
GB 15346 Chemical reagent packaging and marking
HG/T 3921 Chemical Reagent Sampling and Acceptance Rules
3 Terms and definitions
There are no terms and definitions that need to be defined in this document.
4 traits
This reagent is a colorless and transparent liquid with volatility and an odor similar to ether. It is miscible with alcohol and ether, slightly soluble in water, toxic, and numb.
Intoxication.
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