HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (11 Oct 2025)

GB/T 631-2007 English PDF

US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 631-2007: Chemical reagent -- Ammonia solution
Status: Valid

GB/T 631: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 631-2007English209 Add to Cart 3 days [Need to translate] Chemical reagent -- Ammonia solution Valid GB/T 631-2007
GB/T 631-1989English199 Add to Cart 2 days [Need to translate] Chemical reagent--Ammonia solution (25%) Obsolete GB/T 631-1989

PDF similar to GB/T 631-2007


Standard similar to GB/T 631-2007

GB/T 1396   GB/T 1282   GB/T 6684   GB/T 625   GB/T 623   GB/T 638   

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Older Standard (superseded by this standard) GB/T 631-1989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

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 631-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 631-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 631-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 631-2007_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 631-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 631-2007 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.