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GB/T 9726-2007 English PDF

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US$159.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 9726-2007: Chemical reagent -- General rule for the determination of permanganate-reducing substances
Status: Valid

GB/T 9726: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9726-2007	159	Add to Cart	3 days	Chemical reagent -- General rule for the determination of permanganate-reducing substances	Valid
GB/T 9726-1988	199	Add to Cart	2 days	Chemical reagent--General rules for the determination of permanganate-reducing substances	Obsolete

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Basic data

Standard ID: GB/T 9726-2007 (GB/T9726-2007)
Description (Translated English): Chemical reagent -- General rule for the determination of permanganate-reducing substances
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G60
Classification of International Standard: 71.040.30
Word Count Estimation: 6,613
Date of Issue: 2007-09-26
Date of Implementation: 2008-04-01
Older Standard (superseded by this standard): GB/T 9726-1988
Adopted Standard: ISO 6353-1-1982, NEQ
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 direct method (visual colorimetry) and indirect (titration analysis method) reduction of potassium permanganate substances common method. This standard applies to the direct method neutral alcohol, ketones or other neutral, weakly alkaline samples measured substances containing low potassium permanganate reduction, indirect method is suitable for the reduction in the sample material over the content of potassium permanganate high or measuring the reaction of potassium permanganate and potassium permanganate substances more difficult to sample restored.

GB/T 9726-2007: Chemical reagent -- General rule for the determination of permanganate-reducing substances

---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. General rule for the determination of permanganate-reducing substances ICS 71.040.30 G60 National Standards of People's Republic of China Replacing GB/T 9726-1988 Chemical Reagents General principles for measurement of potassium permanganate reducing substance (ISO 6353-1. 1982, Reagentsforchemicalanalysis- Part 1. Generaltestmethods, NEQ) Posted 2007-09-26 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 6353-1. 1982 "Reagents for chemical analysis - Part 1. General test method" non-equivalent. This standard replaces GB/T 9726-1988 "chemical reagents potassium permanganate reducing substances determination Law", and GB/T 9726-1988 phase Than the main changes are as follows. --- Modify the contents of the principle of the method (see Chapter 3); --- Cancel the 1988 edition of Appendix B. Appendix A of this standard is an informative annex. 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. Guangdong Guanghua Chemical Factory Co., Ltd. The main drafters of this standard. Li Tao Pan, Zhang Zhibin, even the king of the body. This standard was first published in 1988. Chemical Reagents General principles for measurement of potassium permanganate reducing substance

1 Scope

This standard specifies the direct method (visual colorimetric method) and indirect methods (titration analysis) Determination of permanganate reducing substances in the general method. This standard applies to the direct method neutral alcohols, ketones, or other neutral, weakly alkaline reduction test sample containing substances of low potassium permanganate Set; indirect method for sample reaction to restore higher levels of potassium permanganate, potassium permanganate reducing substance or substances in the sample than with potassium permanganate Determination difficult performed.

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 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)

3 PRINCIPLE OF THE METHOD

Under certain conditions, the test solution of potassium permanganate reducing substances can react with potassium permanganate, so that the test solution fade. 3.1 Direct Method According to the standard potassium permanganate titration solution concentration, size and degree of fading can be given potassium permanganate reducing substances semiquantitative result. 3.2 indirect method Determination of residual use of potassium permanganate iodometry, potassium permanganate reducing substance can be obtained mass fraction.

4 Reagents and materials

Unless otherwise specified, the standard titration solution, preparations and products, according to GB/T 601, the provisions of the preparation of GB/T 603, the test water Shall comply with GB/T 6682 water in three specifications, are used in the mass fraction solution "%" represents.

5 instruments and devices

5.1 General laboratory equipment. 5.2 microburette.

6 Determination

6.1 Direct Method Sampling and preparation of test solution by product standards, put ground glass colorimetric tube, add a predetermined volume of potassium permanganate Standard Solution [Ba (15KMnO4 ) = 0.1mol/L], cover the plug at a predetermined temperature in the dark for a predetermined period of time. Pink solution was observed No completely disappear. Calculation Method See Appendix A. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 9726-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 9726-2007_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 9726-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 9726-2007_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 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 9726-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 9726-2007 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.