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GB/T 15916-2012 English PDF

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Q: Should I purchase the latest version GB/T 15916-2012?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15916-2012 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.

US$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15916-2012: Surface active agents -- Determination of chelating agent content -- Titrimetric method
Status: Valid

GB/T 15916: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15916-2012	329	Add to Cart	3 days	Surface active agents -- Determination of chelating agent content -- Titrimetric method	Valid
GB/T 15916-1995	199	Add to Cart	2 days	Surface active agents--Determination of chelating agent content--Titrimetic method	Obsolete

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Basic data

Standard ID: GB/T 15916-2012 (GB/T15916-2012)
Description (Translated English): Surface active agents -- Determination of chelating agent content -- Titrimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G72
Classification of International Standard: 71.100.40
Word Count Estimation: 14,188
Older Standard (superseded by this standard): GB/T 15916-1995
Quoted Standard: GB/T 622-2006; GB/T 6368-2008; GB/T 6372-2006; GB/T 6682-2008
Adopted Standard: ISO 4325-1990, MOD
Regulation (derived from): National Standards Bulletin 2012 No. 41
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 bin given surfactant chelating agent concentration method chelator content does not exceed 2% (mass fraction). This standard applies to the surfactant ethylene diamine tetra-acetic acid (EDTA) and its salts to the determination

GB/T 15916-2012: Surface active agents -- Determination of chelating agent content -- Titrimetric method

---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.
ICS71.100.40 G72 National Standards of People's Republic of China Replacing GB/T 15916-1995 Surface active agents chelating Content titration ISO 4325.1990, Soapsanddetergents-Determinationofchelatingagent content-Titrimetricmethod, MOD) Issued on. 2013-08-01 2012-12-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard rule according to GB/T 1.1-2009 given draft. This standard replaces GB/T 15916-1995 "chelating surfactant titration Determination", and GB/T 15916- Compared to 1995, the main changes are as follows. --- Increasing the foreword; --- Increase the informative Appendix A. This standard uses redrafted law revision of international standards ISO 4325.1990 "Determination of soap and detergents, chelating Content titration". This standard and ISO 4325.1990, compared with more adjustment in the structure, are listed in Appendix A of this standard and ISO 4325. Chapter 1990 Article ID Control List. This standard and ISO 4325.1990 and the technical differences for the following reasons. --- On normative references, this standard has been adjusted technical differences, in order to adapt our technical conditions, the adjusted situation Focus is reflected in the status of Chapter 2, "Normative references", the specific adjustments are as follows. ● equivalents adoption of international standards GB/T 6372-2006 instead of ISO 607. 1980 (see Chapter 6); ● Modify with international standards of GB/T 6682-2008 instead of ISO 3696. 1987 (see 4.1); ● increase cited GB/T 622-2006 (see 4.2); ● increase cited GB/T 6368-2008 (see Chapter 7); ● Deleted ISO 385.1. 1984. --- Increased by 5.3, because the test conditions in Chapter 7 of the steps of heating and stirring. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Chemistry (specialty) surfactant Technical Committee (SAC/TC63/SC8) centralized. This standard was drafted. Shanghai Tiantan Auxiliaries Co., Ltd., Zhejiang Real Technology Co., Ltd. The main drafters of this standard. Furui Fang, Zhong Ren standard, Zhuangyong Bin, Tang Fuwei. This standard replaces the standards previously issued as follows. --- GB/T 15916-1995. Surface active agents chelating Content titration

1 Scope

This standard specifies the method for determining the surfactant content of the chelating agent, a chelating agent content of not more than 2% (mass fraction). This standard applies to surface active agents ethylenediaminetetraacetic acid (EDTA) and its salts Determination of content, in the determination of the content of other chelating agents, Prior to determining the presence or ethylene diamine tetra-acetic acid content of other chelating agent should confirm the applicability of the method.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 622-2006 chemical reagents hydrochloride GB/T 6368-2008 Determination of pH value of an aqueous solution of the surfactant potential method (ISO 4316. 1977, IDT) GB/T 6372-2006 surfactant and detergent sample division method (ISO 607. 1980, IDT) GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) Principle 3 The sample was dissolved in water, the solution was adjusted to pH 4.6, 1- (2-pyridyl) azo-2-naphthol as an indicator, with drops of copper sulfate standard Fixed titration.

4 Reagents and materials

4.1 test water Third grade water requirements of GB/T 6682-2008 prescribed. 4.2 hydrochloric acid solution Meet the technical requirements GB/T 622-2006 a, c (HCl) = 5mol/L. 4.3 acetic acid buffer solution pH = 4.6, the c (CH3COOH) = 0.4mol/L in acetic acid and c (NaOH) = 0.2mol/L sodium hydroxide solution An equal volume of mixed preparation. 4.4 copper sulfate (CuSO4 · 5H2O) Standard Solution c (CuSO4) = 0.0100mol/L, weighed purity of 99% (mass fraction) of copper sulfate pentahydrate (CuSO4 · 5H2O) 2.522g, accurate to 0.001g, dissolved in water and diluted to 1000mL, and mix. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15916-2012_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15916-2012_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 15916-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15916-2012_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 Sales@ChineseStandard.net. 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 15916-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15916-2012 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.