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GB/T 9737-2008 English PDF

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GB/T 9737-2008: Chemical reagent -- General rules for the determination of readily carbonizable substances
Status: Valid

GB/T 9737: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 9737-2008English169 Add to Cart 3 days [Need to translate] Chemical reagent -- General rules for the determination of readily carbonizable substances Valid GB/T 9737-2008
GB/T 9737-1988English199 Add to Cart 2 days [Need to translate] Chemical reagent--General rules for the measurement of readily carbonizable substances Obsolete GB/T 9737-1988

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Basic data

Standard ID GB/T 9737-2008 (GB/T9737-2008)
Description (Translated English) Chemical reagent -- General rules for the determination of readily carbonizable substances
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G60
Classification of International Standard 71.040.30
Word Count Estimation 7,723
Date of Issue 2008-05-15
Date of Implementation 2008-11-01
Older Standard (superseded by this standard) GB/T 9737-1988
Quoted Standard GB/T 601; GB/T 603; GB/T 6682
Adopted Standard ISO 6353-1-1982, NEQ
Regulation (derived from) National Standard Approval Announcement 2008 No.8 (Total No.121)
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 standard 20 different shades of color. And be easy to use these standard color measurement General carbonized material. This standard applies to the determination of organic chemistry reagents easily carbonized substances.

GB/T 9737-2008: Chemical reagent -- General rules for the determination of readily carbonizable substances


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Chemical reagent. General rules for the determination of readily carbonizable substances ICS 71.040.30 G60 National Standards of People's Republic of China Replacing GB/T 9737-1988 Chemical Reagents Determination of General Yi carbonized substance (ISO 6353-1. 1982, Reagentsforchemicalanalysis- Part 1. Generaltestmethods, NEQ) Posted 2008-11-01 2008-05-15 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 "Chemical analysis of reagent --- Part 1. General test method" non-equivalent. This standard replaces GB/T 9737-1988 "Determination of chemical reagents easily carbonized material General", compared with the GB/T 9737-1988 Main Changes are as follows. --- Increasing the cobalt chloride solution, a solution of copper sulfate, ferric chloride solution shelf (Excerpts 4.3,4.4,4.5); --- Modify the mass fraction of cobalt chloride solution concentration calibration and calibration concentration copper sulfate solution of acetic acid solution (1988 Version of Appendix A; this edition of Appendix A); --- Canceled Appendix B (1988 edition). Appendix A of this standard is a normative appendix. 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. Sinopharm Chemical Reagent Co., Ltd. The main drafters of this standard. Chenhao Yun, Chen Hong. This standard was first published in 1988. Chemical Reagents Determination of General Yi carbonized substance

1 Scope

This standard specifies 20 different shades of color standards, and be easy to use these standard colors carbonized substance determined General. This standard applies to the determination of organic chemicals easily carbonized substances.

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 6682-2008, ISO 3696. 1987, MOD)

3 PRINCIPLE OF THE METHOD

Concentrated sulfuric acid composition of the water can be captured hydrogen and oxygen from some organic compounds, the carbonization of these organic compounds, so that the concentrated sulfuric acid or Mixture of concentrated sulfuric acid and the sample color rendering, can be used to visually easily carbonized material colorimetry.

4 Reagents and materials

4.1 General provisions Unless otherwise specified in this standard, the standard titration solution used in formulations and products, according to GB/T 601, the provisions of the preparation of GB/T 603's; Test water should comply with GB/T 6682 water in three specifications, are used in mass fraction in% of the solution. 4.2 hydrochloric acid solution (39 + 1) Measure 3900mL of water, was added 100mL of hydrochloric acid, and mix. Weigh 60g cobalt chloride hexahydrate, was dissolved in 900mL of hydrochloric acid solution (39 + 1) and diluted with hydrochloric acid (39 + 1) to 1000mL. According to the method specified in Appendix A calibration, and by calculating the amount of added hydrochloric acid solution (39 + 1), the final mass of the solution Concentration of 59.5mg/mL (in CoCl2 · 6H2O dollars). The solution was kept in the dark sealed package, valid for six months. Weigh 63g copper sulfate pentahydrate, dissolved in 900mL of hydrochloric acid solution (39 + 1) and diluted with hydrochloric acid (39 + 1) to 1000mL. According to the method specified in Appendix A calibration, and by calculating the amount of added hydrochloric acid solution (39 + 1), the final concentration of the solution It was 62.4mg/mL (in CuSO4 · 5H2O dollars). The solution was kept in the dark sealed package, valid for six months. Weigh 46g of ferric chloride (FeCl3 · 6H2O), was dissolved in 900mL of hydrochloric acid solution (39 + 1) and (1 + 39) was diluted with hydrochloric acid To 1000mL. According to the method specified in Appendix A calibration, and by calculating the amount of added hydrochloric acid solution (39 + 1), the final concentration of the solution Degree of 45.0mg/mL (FeCl3 · 6H2O to count). The solution was kept in the dark sealed package, valid for six months.

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