GB/T 1281-2011 English PDF

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GB/T 1281-2011: Chemical reagent -- Bromine
Status: Valid

GB/T 1281: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1281-2011	139	Add to Cart	3 days	Chemical reagent -- Bromine	Valid
GB/T 1281-1993	199	Add to Cart	2 days	Chemical reagents. Bromine	Obsolete

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Basic data

Standard ID: GB/T 1281-2011 (GB/T1281-2011)
Description (Translated English): Chemical reagent -- Bromine
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G62
Classification of International Standard: 71.040.30
Word Count Estimation: 6,674
Date of Issue: 2011-05-12
Date of Implementation: 2011-12-01
Older Standard (superseded by this standard): GB/T 1281-1993
Quoted Standard: GB/T 601; GB/T 602; GB/T 603; GB/T 6682; GB/T 9728; GB/T 9735; GB/T 9739; GB/T 9740; GB 15258; GB 15346; HG/T 3921
Adopted Standard: ISO 6353-3-1987, NEQ
Regulation (derived from): Announcement of Newly Approved National Standards No. 6 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the characteristics of bromine chemical reagents, specifications, testing, inspection and marking and packaging rules. This standard applies to chemicals bromine test.

GB/T 1281-2011: Chemical reagent -- Bromine

---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. Bromine ICS 71.040.30 G62 National Standards of People's Republic of China Replacing GB/T 1281-1993 Chemicals bromine (ISO 6353-3. 1987, Reagentsforchemicalanalysis- Part 3. Specifications-Secondseries, NEQ) Issued on. 2011-05-12 2011-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard and ISO 6353-3. 1987 "Reagents for chemical analysis - Part 3. Specification 2 of the series" The R51 "bromine," the degree of consistency Not equivalent. This standard replaces GB /"chemical reagents bromine," compared with the GB/T 1281-1993 T 1281-1993 major changes are as follows. --- Adjust the amount of sulfate samples measured (the 1993 version 4.2.5, this version 5.7); --- Determination of heavy metals increased sodium sulfide - Glycerin colorimetry (1993 version 4.2.7, this version 5.9); --- Modify the packaging and logo (the 1993 edition, Chapter 6, Section 7 of this edition). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Chemistry Chemicals Branch (SAC/TC63/SC3) centralized. This standard was drafted. Shenyang Chemical Reagent Factory. The main drafters of this standard. Yang Yuhua, Ju Tianbao, Huangyu Juan. This standard replaces the standards previously issued as follows. --- GB/T 1281-1965, GB/T 1281-1977, GB/T 1281-1993. Chemicals bromine Warning. some of the test procedure specified in this standard can lead to dangerous situations, the user has the responsibility to take appropriate safety and health practices. Formula. Br2 Molecular weight. 159.81 (according to 2007 international relative atomic mass)

1 Scope

This standard specifies the chemical reagents bromine traits, specifications, testing, packaging and inspection rules and signs. This standard applies to chemical agents bromine test.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Preparation of GB/T 601 chemical reagent standard titration solution GB/T 602 Determination of impurities in chemical reagents prepared standard solution (GB/T 602-2002, ISO 6353-1. 1982, NEQ) with GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982, NEQ) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 9728 General method for determination of chemical reagents sulfate (GB/T 9728-2007, ISO 6353-1. 1982, NEQ) GB/T 9735 General method for determination of heavy metals Chemicals (GB/T 9735-2008, ISO 6353-1. 1982, NEQ) GB/T 9739 General method for determination of iron chemical reagents (GB/T 9739-2006, ISO 6353-1. 1982, NEQ) GB/T 9740 General chemical reagent evaporation residue determination method (GB/T 9740-2008, ISO 6353-1. 1982, NEQ) GB 15258 rules for preparation of chemical safety labels GB 15346 chemical reagent packaging and marking HG/T 3921 Chemicals sampling and acceptance rules

3 Characters

This reagent as a dark red volatile toxic heavy liquid with a strong irritating odor. Density (20 ℃) \u200b\u200bof about 3.1g/mL.

4 Specification

Bromine as shown in Table 1. Table 1 Name pure class pure analytical chemistry Content (Br2), w /% ≥99.5 ≥99.5 ≥99.0 Evaporation residue, w /% ≤0.005 ≤0.005 ≤0.01 Chlorine (Cl), w /% ≤0.01 ≤0.02 ≤0.05 Iodine (I), w /% ≤0.001 ≤0.001 ≤0.005 ......

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