GB/T 631-2007 English PDF

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GB/T 631-2007: Chemical reagent -- Ammonia solution
Status: Valid

GB/T 631: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 631-2007	209	Add to Cart	3 days	Chemical reagent -- Ammonia solution	Valid
GB/T 631-1989	199	Add to Cart	2 days	Chemical reagent--Ammonia solution (25%)	Obsolete

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Basic data

Standard ID: GB/T 631-2007 (GB/T631-2007)
Description (Translated English): Chemical reagent -- Ammonia solution
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G62
Classification of International Standard: 71.040.30
Word Count Estimation: 8,814
Date of Issue: 2007-10-25
Date of Implementation: 2008-04-01
Older Standard (superseded by this standard): GB/T 631-1989
Quoted Standard: GB/T 601; GB/T 602; GB/T 603; GB/T 6682; GB/T 9723-2007; GB/T 9727; GB/T 9728; GB/T 9729; GB/T 9740; GB 15258; GB 15346; HG/T 3921
Adopted Standard: ISO 6353-2-1983
Regulation (derived from): China National Standard Approval Announcement2007 No.11 (Total No.111)
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 chemicals-ammonia traits, specifications, trial, packaging and inspection rules and signs. This standard applies to chemicals-ammonia test.

GB/T 631-2007: Chemical reagent -- Ammonia solution

---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. Ammonia solution ICS 71.040.30 G62 National Standards of People's Republic of China Replacing GB/T 631-1989 Chemical reagents ammonia (ISO 6353-2. 1983, Reagentsforchemicalanalysis- Part 2. Specifications-Firstseries, NEQ) Posted 2007-10-25 2008-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard and ISO 6353-2. 1983 "Reagents for chemical analysis - Part 2. Specification 1 Series" in R3 "ammonia solution (25%)," the Non-equivalent. This standard replaces GB /"chemical reagents ammonia", compared with the GB/T 631-1989 T 631-1989 main changes are as follows. --- Increased traits (Chapter 3 of this edition); --- Improved sodium, magnesium, potassium determination (4.2.7,4.2.8,4.2.9 1989 edition, this edition 5.9,5.10,5.11) ; --- Iron determination to flame atomic absorption spectrometry (4.2.11 of the 1989 edition, this version 5.13). 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. Beijing Yili Fine Chemicals Co., Ltd. The main drafters of this standard. Zhao Yufeng, Bi Yong Ping, Secretary Yurong. This standard was first published in 1965, in 1977 the first amendment, the Second Amendment in 1989. Chemical reagents ammonia 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. Molecular formula. NH3 Molecular Weight. 17.03 (according to 2003 international relative atomic mass)

1 Scope

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

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms of dated references, all subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to study under this agreement is standard 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 6682-1992, neq ISO 3696. 1987) GB/T 9723-2007 Chemicals flame atomic absorption spectrometry General GB/T 9727 General method for the determination of phosphate chemical reagent (GB/T 9727-2007, ISO 6353-1. 1982, NEQ) GB/T 9728 General method for determination of chemical reagents sulfate (GB/T 9728-2007, ISO 6353-1. 1982, NEQ) GB/T 9729 General method for determination of chloride Chemicals (GB/T 9729-2007, ISO 6353-1. 1982, NEQ) GB/T 9740 General chemical reagent evaporation residue determination method (GB/T 9740-1988, eqv ISO 6353-1. 1982) 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 is an aqueous solution of ammonia, with pungent odor colorless, absorbs carbon dioxide in the air, a density of about 0.90g/mL.

4 Specification

Aqueous ammonia as shown in Table 1. Table 1 specifications of ammonia Name AR chemically pure Content (NH3), /% 25 ~ 28 25 ~ 28 Evaporation residue, /% ≤0.002 ≤0.004 Chloride (Cl), /% ≤0.00005 ≤0.0001 Sulfide (S), /% ≤0.00002 ≤0.00005 ......

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