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GB/T 13255.1-2009: Test methods of caprolactam for industrial use -- Part 1: Determination of colourity of 50% aqueous caprolactam solution -- Spectrometric method
Status: Valid GB/T 13255.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13255.1-2009 | English | 139 |
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Test methods of caprolactam for industrial use -- Part 1: Determination of colourity of 50% aqueous caprolactam solution -- Spectrometric method
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GB/T 13255.1-2009
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| GB/T 13255.1-1991 | English | 199 |
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Caprolactam for industrial use--Determination of colourity of 50% aqueous caprolactam solution--Spectromeric method
| Obsolete |
GB/T 13255.1-1991
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Basic data | Standard ID | GB/T 13255.1-2009 (GB/T13255.1-2009) | | Description (Translated English) | Test methods of caprolactam for industrial use -- Part 1: Determination of colourity of 50% aqueous caprolactam solution -- Spectrometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G15 | | Classification of International Standard | 71.080 | | Word Count Estimation | 6,622 | | Date of Issue | 2009-05-13 | | Date of Implementation | 2010-01-01 | | Older Standard (superseded by this standard) | GB/T 13255.1-1991 | | Quoted Standard | GB/T 6682-1992; GB/T 8170 | | Adopted Standard | ISO 8112-1984, MOD | | Regulation (derived from) |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 colorimetric spectrophotometry industrial use 50% aqueous solution of caprolactam. | GB/T 13255.1-2009: Test methods of caprolactam for industrial use -- Part 1: Determination of colourity of 50% aqueous caprolactam solution -- Spectrometric method
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Test methods of caprolactam for industrial use.Part 1. Determination of colourity of 50% aqueous caprolactam solution.Spectrometric method
ICS 71.080
G15
National Standards of People's Republic of China
Replacing GB/T 13255.1-1991
Test methods of caprolactam for industrial use
Part 1. 50% aqueous solution measured chromaticity
[ISO 8112. 1984, Caprolactamforindustrialuse-Determinationof
colourof50% aqueouscaprolactamsolution, expressedinHazenunits
(Platinum-cobaltscale) -Spectrometricmethod, MOD]
Issued on. 2010-01-01 2009-05-13 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
Determination of crystallizing point. --- Part 2
--- Part 3. Determination of permanganate absorption spectrophotometry value
--- Part 4. After distillation of volatile alkali content of titration
Absorbance was measured at a wavelength of 290nm. --- Part 5
--- 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 1.
The partial modification of international standards ISO 8112. 1984 "Industrial caprolactam --- 50% aqueous solution of caprolactam measured chromaticity to
Hazen units (platinum - cobalt color number) --- spectrophotometry. "
This section according to ISO 8112. 1984 re-drafted. The standard lists the reg number in Appendix A and ISO 8112. 1984 reg
Control list numbered.
Taking into account China's national conditions, the use of this part of the ISO 8112. 1984 when made some editorial changes, this part of the ISO 8112.
The main technical differences in 1984 is as follows.
--- Analysis of water level defined by the "distilled water or equivalent purity" was changed to "GB/T 6682-2008 in three sizes
Water "(ISO 8112. 1984 version of Chapter 5; Chapter 4 of this section);
--- Measured with a spectrophotometer simplifies the basic requirements (ISO 8112. 1984 version of Chapter 6; Chapter 5 of this section).
This Part replaces GB/T 13255.1-1991 "Determination of 50% aqueous caprolactam industry chromaticity spectrophotometry."
This section compared with the GB/T 13255.1-1991 The main changes are as follows.
--- Will analyze the water level defined as "third grade water GB/T 6682 stipulated" (1991 edition, Chapter 4, Excerpts
Chapter 4);
--- Added "Report" (see Chapter 8).
Appendix A of this section is an informative annex.
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 Company, China Petroleum & Chemical Corporation Beijing Chemical Engineering Institute
Study hospital.
The main drafters of this section. Hao Yan, Tang Yuebing, Zhao Jun red.
This part of the standard replaces the previous editions as. GB/T 13255.1-1991.
Test methods of caprolactam for industrial use
Part 1. 50% aqueous solution measured chromaticity
Spectrophotometry
1 Scope
GB/T 13255 provisions of this part of the color with 50% aqueous caprolactam by spectrophotometry industry.
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.
Laboratory use specifications and test methods (. 1987 neq ISO 3696) GB/T 6682-1992 Analysis
GB/T 8170 repair value expressed about the rules and limit values and judgment
3 PRINCIPLE OF THE METHOD
50% measured by a spectrophotometer absorbance at 390nm caprolactam in aqueous solution at a wavelength of the absorbance change by a constant 150
Hazen units --- counted as platinum - cobalt color number color.
4 Reagents
Unless otherwise indicated in the analysis using only comply with GB/T 6682-1992 specified in the third grade water.
5 Instruments
Spectrophotometer. Accuracy ± 0.004A. With 5cm absorption cell.
Step 6 Analysis
6.1 Determination
Weigh 50.0g laboratory samples, accurate to 0.1g, placed in 250mL beaker, add 50mL water and stir to dissolve, and stand until the air
Bubble disappears, the solution was injected into a cuvette, adding water to absorb another pool at 390nm wavelength, using water as a reference, with a spectrophotometer
Measuring absorbance.
6.2 absorbance corrected absorption cell
The water instead of sample solution was injected into the absorption cell, measured at 390nm wavelength absorption cell absorbance difference between the two, namely the absorption cell absorbance
The correction value.
7 Results Calculation
Chroma x0 (Hazen unit --- platinum - cobalt color number) according to equation (1).
X0 = 150 × (A1-A0) (1)
Where.
--- The A1 sample absorbance of the solution;
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