GB/T 11213.1-2007 English PDF

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GB/T 11213.1-2007: Sodium hydroxide for chemical fiber use -- Determination of sodium hydroxide content
Status: Valid

GB/T 11213.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11213.1-2007	159	Add to Cart	3 days	Sodium hydroxide for chemical fiber use -- Determination of sodium hydroxide content	Valid
GB/T 11213.1-1989	199	Add to Cart	3 days	Sodium hydroxide for chemical fiber--Determination method of mass fraction	Obsolete

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Basic data

Standard ID: GB/T 11213.1-2007 (GB/T11213.1-2007)
Description (Translated English): Sodium hydroxide for chemical fiber use -- Determination of sodium hydroxide content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G11
Classification of International Standard: 71.060.40
Word Count Estimation: 6,634
Date of Issue: 2007-08-13
Date of Implementation: 2008-02-01
Older Standard (superseded by this standard): GB/T 11213.1-1989
Adopted Standard: ISO 979-1979 (2002), MOD
Regulation (derived from): China National Standard Approval Announcement2007 No.8 (Total No.108)
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 method for measuring fiber content of sodium hydroxide NaOH. Usually NaOH mass fraction in two different ways of expressing: w1-Total Alkalinity (as NaOH), W2-sodium content (NaOH), which subtracts the amount of total alkali carbonate content.

GB/T 11213.1-2007: Sodium hydroxide for chemical fiber use -- Determination of sodium hydroxide content

---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.
Sodium hydroxide for chemical fiber use. Determination of sodium hydroxide content ICS 71.060.40 G11 National Standards of People's Republic of China Replacing GB/T 11213.1-1989 Determination of fiber content by sodium hydroxide [ISO 979. 1974 (2002), Sodiumhydroxideforindustrialuse- Methodofassay, MOD] Posted 2007-08-13 2008-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 11213 "fiber with sodium hydroxide" is divided into the following sections. --- Part 1. Chemical fiber with sodium hydroxide Determination; --- Part 2. Determination of sodium chloride content of fiber spectrophotometry; --- Part 3. Chemical fiber with sodium hydroxide and calcium content - EDTA complexometric titration; --- Part 4. Determination of chemical fiber with silicon content of sodium molybdate salt spectrophotometric method for reducing silicon; --- Part 5. Determination of fiber with sodium sulfate content; --- Part 7. Determination of synthetic sodium copper content spectrophotometry. This section GB/T Part 111 213, which corresponds to the international standard ISO 979. 1974 (2002) "Analysis hydroxide for industrial use Method "(in English). This part of ISO 979. 1974 (2002) to modify the use of the degree of consistency. According to this part of ISO 979. 1974 (2002) redrafted. For ease of comparison, the information in Appendix A lists the provisions of this section List of control clauses with international standards. Taking into account China's national conditions, at the time of the adoption of international standards, we made some changes. About the technical differences have been incorporated into the text in which they are involved The terms of the margin identified by a single vertical line. In Appendix B gives a list of the technical differences and the reasons for reference. For ease of use, this section also made the following editorial changes. a) "this International Standard" be replaced by "this section"; b) with a decimal point versus decimal comma ",". ","; c) Remove the cover and introduction of international standards; d) increase the informative appendix, for ease of use; e) the "amount of substance concentration" instead of "equivalent solutions"; f) to "1" instead of total alkali content "A"; g) to "2" in place of the sodium hydroxide level "B". This Part replaces GB/T 11213.1-1989 "synthetic method for measuring the content of sodium hydroxide (a law)." This section compared with the GB/T 11213.1-1989 The main changes are as follows. --- Standard different names; --- Increasing the standard preface; --- Sample probe different amounts (before version 6.1, this version 6.1); --- Total Alkalinity different calculation formulas (before version 7.1, this version 7.1); The formula --- sodium content of different (before version 7.2, this version 7.2); --- Added "Test Report" section (see Chapter 9). This section in Appendix A, Appendix B is an informative annex. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee chlor-alkali chemical branch (SAC/TC63/SC6) centralized. This section is drafted. Jinxi Chemical Industry Research Institute, Ltd. Xilin Gol Sunite alkali industry, Yibin Tianyuan Co., Ltd.. The main drafters of this section. Li Furong, Marvin yuan, Chenpei Yun, Zhou Jie, Hu Liming, Tianyou Li. This section was first released in 1989. Please note that some of the content of this section may involve patents. This part of the release mechanism should not bear the responsibility to identify these patents. Determination of fiber content by sodium hydroxide

1 Scope

GB/T 11213 provisions of this part of the synthetic method for the determination of the content of sodium hydroxide was neutralized with sodium hydroxide. Typically NaOH quality Score two different ways to express. 1 --- Total Alkalinity (NaOH to count); 2 --- sodium content (NaOH dollars), which subtracts the total alkali content of sodium carbonate content.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. Preparation of GB/T 601 chemical reagent standard titration solution GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987) GB/T 7698 industrial use - Determination of carbonate content of sodium hydroxide titration [GB/T 7698-2003, ISO 3196. 1975 (2002), MOD] Principle 3 Methyl orange as indicator, measured as sodium hydroxide and alkali content (as NaOH meter) with hydrochloric acid standard volumetric titration of sodium carbonate solution, Save To sodium content (NaOH dollars), is the content of sodium hydroxide.

4 Reagents and materials

Unless otherwise indicated in the analysis using only confirm three water as analytical reagent and GB/T 6682 specified in (non-carbonated) Or corresponding purity water. Standard solution of the test required in the absence of other provisions, according to GB/T 601 provisions prepared. 4.1 hydrochloric acid standard titration solution. 1mol/L. 4.2 methyl orange indicator solution. 0.5g/L. Weigh 0.1g of methyl orange, dissolved in 70 ℃ water, cooled, diluted to 200mL.

5 Instruments

The following general laboratory equipment and instruments. 5.1 Pipette. 50mL, A grade. 5.2 Buret. 50mL, 0.1mL have dividing the value of, A-level. Step 6 Analysis 6.1 Preparation of sample solution 6.1.1 quickly weighed the equivalent of solid sodium hydroxide laboratory samples of 36g ~ 40g (accurate to 0.01g), was dissolved in approximately 200mL water The transferred 1000mL volumetric flask, dilute to near the mark, cooled to room temperature. Dilute to the mark. 6.1.2 Weigh the equivalent of sodium hydroxide liquid laboratory samples of 36g ~ 40g (accurate to 0.01g), moved into 1000mL volumetric flask , Dilute to the mark close, cooled to room temperature. Dilute to the mark. ......

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