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GB/T 13255.6: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 13255.6-2009 | English | 189 |
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With caprolactam industry test methods -- Part 6: Determination of acidity or alkalinity
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| GB/T 13255.6-1991 | English | 199 |
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Caprolactam for industrial use--Determination of acidity or alkalinity
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Basic data
| Standard ID | GB/T 13255.6-2009 (GB/T13255.6-2009) |
| Description (Translated English) | With caprolactam industry test methods -- Part 6: Determination of acidity or alkalinity |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G15 |
| Classification of International Standard | 71.080 |
| Word Count Estimation | 8,858 |
| Date of Issue | 2009-05-13 |
| Date of Implementation | 2010-01-01 |
| Older Standard (superseded by this standard) | GB/T 13255.6-1991 |
| Regulation (derived from) | PRC National Standard Approval Announcement 2009 No.6 (Total No.146) |
| 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 determination of industrial caprolactam acidity or alkalinity by titration analysis. |
GB/T 13255.6-2009: With caprolactam industry test methods -- Part 6: Determination of acidity or alkalinity
---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.
With caprolactam industry test methods - Part 6. Determination of acidity or alkalinity
ICS 71.080
G15
National Standards of People's Republic of China
Replacing GB/T 13255.6-1991
Test methods of caprolactam for industrial use
Part 6. Determination of acidity or alkalinity
Posted 2009-05-13
2010-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 13255 "Industrial caprolactam test method" is divided into eight sections.
--- Part 1. Determination of a 50% aqueous solution of chromaticity spectrophotometry;
--- Part 2. Determination of crystallizing point;
--- Part 3. Determination of permanganate absorption spectrophotometry value;
--- Part 4. After distillation of volatile alkali content of titration;
--- Part 5. 290nm wavelength measured absorbance;
--- Part 6. Determination of acidity or alkalinity;
--- Part 7. Determination of iron content;
--- Part 8. Determination of cyclohexanone oxime content.
This section GB/T 13255 Part 6.
This Part replaces GB/T 13255.6-1991 "industrial caprolactam Determination of acidity or alkalinity."
This section compared with the GB/T 13255.6-1991 The main changes are as follows.
--- Will analyze the water level defined as "third grade water GB/T 6682-2008 specified" (1991 edition, Chapter 4, Excerpts
Chapter 4).
--- Added "Report" (see Chapter 8).
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee on Organic Chemistry Club (SAC/TC63/SC2) centralized.
This section drafted by. China Petroleum & Chemical Corporation Baling Branch.
The main drafters of this section. Zhao Jun red, Shenpei Zhi, Kuang Zhigang.
This part of the standard replaces the previous editions are.
--- GB/T 13255.6-1991.
Test methods of caprolactam for industrial use
Part 6. Determination of acidity or alkalinity
1 Scope
GB/T 13255 provisions of this part of the analysis was determined by titration industrial caprolactam acidity or alkalinity.
2 Normative references
The following documents contain provisions which, through reference GB/T 13255 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
Preparation of GB/T 601-2002 Chemical Reagent standard titration solution
GB/T 603-2002 Chemical Reagent Test Methods Preparations with (ISO 6353-1. 1982, NEQ)
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
3 Method summary
Methyl red - methylene blue ethanol as indicator, titrated with standard sodium hydroxide solution or hydrochloric acid standard titration solution titration, measured
Acidity or alkalinity.
4 Reagents and solutions
This part of the reagents and water, refer analytical grade and third grade water GB/T 6682-2008 stipulated.
Analysis in the standard titration solution, preparations and products, did not indicate when the other requirements, according to GB/T 601-2002,
GB/T 603-2002 Preparation of the provisions.
4.1 sodium hydroxide standard titration solution. Ba (NaOH) = 0.01mol/L. The time is now equipped with.
4.2 hydrochloric acid standard titration solution. Ba (HCl) = 0.01mol/L. The time is now equipped with.
4.3 methyl red - methylene blue mixed indicator.
5 Instruments
Microburette. volume 1mL or 3mL, dividing the value of 0.01mL.
Step 6 Analysis
6.1 Preparation of neutral distilled water
The water is placed 250mL 150mL conical flask, add 8 drops of mixed indicator, standard titration with sodium hydroxide solution or hydrochloric acid standard
Titration solution titrated to a solution grayish green.
6.2 Determination
Weigh about 40g laboratory samples, accurate to 0.1g, dissolved in distilled water poured into neutral. If the solution was purple it indicates acidic,
Standard titration with sodium hydroxide solution was titrated to a solution grayish green. If the solution is green is represented as a basic, standard titration with hydrochloric acid solution drops
Given to the solution grayish green.
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