HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 641-2011 English PDF

US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 641-2011: Chemical reagent -- Potassium peroxydisulfate
Status: Valid

GB/T 641: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 641-2011English139 Add to Cart 3 days [Need to translate] Chemical reagent -- Potassium peroxydisulfate Valid GB/T 641-2011
GB/T 641-1994English239 Add to Cart 2 days [Need to translate] Chemical reagent. Potassium peroxydisulfate Obsolete GB/T 641-1994
GB 641-1978English199 Add to Cart 2 days [Need to translate] Chemical reagents--Potassium persulfate Obsolete GB 641-1978

PDF similar to GB/T 641-2011


Standard similar to GB/T 641-2011

GB/T 1396   GB/T 1282   GB/T 6684   GB/T 649   GB/T 638   GB/T 650   

Basic data

Standard ID GB/T 641-2011 (GB/T641-2011)
Description (Translated English) Chemical reagent -- Potassium peroxydisulfate
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G62
Classification of International Standard 71.040.30
Word Count Estimation 6,658
Date of Issue 2011-05-12
Date of Implementation 2011-12-01
Older Standard (superseded by this standard) GB/T 641-1994
Quoted Standard GB/T 601; GB/T 602; GB/T 603; GB/T 609; GB/T 6682; GB/T 9729; GB/T 9735; GB/T 9738; GB/T 9739; GB 15258; GB 15346; HG/T 3484; HG/T 3921
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 chemical reagent potassium persulfate traits, specifications, testing, inspection and marking and packaging rules. This standard applies to chemical reagent potassium persulfate test.

GB/T 641-2011: Chemical reagent -- Potassium peroxydisulfate

---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. Potassium peroxydisulfate ICS 71.040.30 G62 National Standards of People's Republic of China Replacing GB/T 641-1994 Chemical Reagents Potassium peroxydisulfate (persulfate) 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 replaces GB/T 641-1994 "chemical reagents potassium persulfate," compared with the GB/T 641-1994 main changes are as follows. --- Clarity test specifications by a "qualified" to "3", "5" (1994 version 3.2, this version of Chapter 4); --- Chemical reagents common method of water-insoluble substance use (1994 version 4.2.2, this version 5.4); --- Determination of heavy metals increased sodium sulfide - Glycerin colorimetry (1994 version 4.2.7, this version 5.9); --- Modify the packaging and logo (1994 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. Shanghai Institute of chemical reagents. The main drafters of this standard. Suiqi Ying, Sheng Xiaohua. This standard replaces the standards previously issued as follows. --- GB/T 641-1965, GB/T 641-1978, GB/T 641-1994. Chemical Reagents Potassium peroxydisulfate (persulfate) 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. K2S2O8 Molecular weight. 270.32 (according to 2007 international relative atomic mass)

1 Scope

This standard specifies the chemical reagents potassium persulfate traits, specifications, testing, packaging and inspection rules and signs. This standard applies to potassium persulfate test chemical reagent.

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 in test methods - Preparations with (GB/T 603-2002, ISO 6353-1. 1982, NEQ) GB/T 609 chemical reagent - General method for determination of total nitrogen (GB/T 609-2006, ISO 6353-1. 1982, NEQ) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 9729 General method for determination of chloride Chemicals (GB/T 9729-2007, 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 9738 Determination of water insoluble chemical reagent - General method (GB/T 9738-2008, 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 15258 rules for preparation of chemical safety labels GB 15346 chemical reagent packaging and marking HG/T 3484 standard chemical reagents glass emulsion and clarity standards HG/T 3921 Chemicals sampling and acceptance rules

3 Characters

This reagent is a colorless or white crystalline powder, soluble in water. In case of wet gradually decompose and release oxygen.

4 Specification

Potassium peroxydisulfate specifications shown in Table 1. Table 1 Name AR chemically pure Content (K2S2O8), w /% ≥99.5 ≥99.0 Clarity test/number ≤3 ≤5 Water-insoluble, w /% ≤0.005 ≤0.01 Chloride and chlorate (as Cl dollars), w /% ≤0.002 ≤0.005

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 641-2011_English be delivered?

Answer: Upon your order, we will start to translate GB/T 641-2011_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 641-2011_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 641-2011_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 641-2011?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 641-2011 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.