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GB/T 13255.5-2009: Test methods of caprolactam for industrial use -- Part 5: Determination of absorbance at a wavelength of 290nm
Status: Valid GB/T 13255.5: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13255.5-2009 | English | 189 |
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Test methods of caprolactam for industrial use -- Part 5: Determination of absorbance at a wavelength of 290nm
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GB/T 13255.5-2009
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| GB/T 13255.5-1991 | English | 199 |
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Caprolactam for industrial use--Determination of absorbance at a wavelength of 290nm
| Obsolete |
GB/T 13255.5-1991
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PDF similar to GB/T 13255.5-2009
Basic data | Standard ID | GB/T 13255.5-2009 (GB/T13255.5-2009) | | Description (Translated English) | Test methods of caprolactam for industrial use -- Part 5: Determination of absorbance at a wavelength of 290nm | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G15 | | Classification of International Standard | 71.080 | | Word Count Estimation | 8,816 | | Date of Issue | 2009-05-13 | | Date of Implementation | 2010-01-01 | | Older Standard (superseded by this standard) | GB/T 13255.5-1991 | | Adopted Standard | ISO 7059-1982, MOD | | Regulation (derived from) | PRC National Standard Approval Announcement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 use of industrial caprolactam spectrophotometry absorbance at 290 nm wavelength. | GB/T 13255.5-2009: Test methods of caprolactam for industrial use -- Part 5: Determination of absorbance at a wavelength of 290nm
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Test methods of caprolactam for industrial use Part 5. Determination of absorbance at a wavelength of 290nm
ICS 71.080
G15
National Standards of People's Republic of China
Replacing GB/T 13255.5-1991
Test methods of caprolactam for industrial use - Part 5.
290 Determination of absorbance at a wavelength of shape m1
(ISO 7059. 1982, Caprolactamforindustrialuse-
Determinationofabsorbanceatawavelengthof290nm, MOD)
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 5.
The partial modification of international standards ISO 7059. 1982 "industrial caprolactam --- 290nm wavelength absorbance measurement."
This section according to ISO 7059. 1982 redrafted. This section lists the reg number in Appendix A and ISO 7059. 1982 reg
Control list numbered.
Taking into account China's national conditions, this part adopting ISO 7059. 1982 time made some editorial changes, this portion of the ISO 7059.
1982 main technical differences are as follows.
--- Analysis of water level defined by the "distilled water or equivalent purity" was changed to "GB/T 6682-2008 stipulated three water"
(ISO 7059. 1982 version of Chapter 3; Chapter 4 of this section);
--- An increase of 50% aqueous caprolactam "stand until the bubbles disappear" analysis step before measurement (ISO 7059. 1982 Edition
5.1; 4.1 part);
--- Added "The difference between two parallel determination results is not more than 0.010, the arithmetic average of the measurement results. The results shall be rounded
To two decimal places "parallel test and results represents the content (ISO 7059. 1982 version of Chapter 6; Chapter 5 of this section).
This Part replaces GB/T 13255.5-1991 "Industrial caprolactam 290nm wavelength absorbance measurement."
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 6682-1992 specified" (1991 edition, Chapter 4, Excerpts
Chapter 4);
--- Added "Report" (see Chapter 6).
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 Branch.
The main drafters of this section. Zhao Jun red, Shenpei Zhi, Kuang Zhigang.
This part replaces the previous editions of the standard. GB/T 13255.5-1991.
Test methods of caprolactam for industrial use - Part 5.
290 Determination of absorbance at a wavelength of shape m1
1 Scope
GB/T 13255 provisions of this part of the industry was determined by spectrophotometry absorbance at 290nm caprolactam wavelength.
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.
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
GB/T 8170 repair numerical representation about rules and limit values \u200b\u200band judgment
3 Method summary
50% aqueous solution of caprolactam absorbance at 290nm wavelength was measured using a spectrophotometer.
4 Instrument
4.1 UV spectrophotometer. Accuracy ± 0.002A.
4.2 quartz absorption cell. 2, optical path 1cm.
Step 5 Analysis
Analysis of water in this section shall comply with the third grade water GB/T 6682-2008 requirements.
5.1 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 poured into a quartz absorption cell, water is added another quartz cuvette at wavelength of 290nm, using water as a reference,
UV spectrophotometer measure absorbance.
5.2 absorbance corrected absorption cell
The water instead of sample solution was injected into absorption cell at 290nm wavelength measured absorbance difference between two absorption cell, namely the absorption cell absorbance
Correction degree value. Correction should not exceed 0.003 absorbance.
6 calculated results
X0 absorbance at 290nm wavelength according to equation (1).
X0 = A1-A0 (1)
Where.
--- The A1 sample solution was measured by absorbance values;
A0 --- absorption correction absorbance values \u200b\u200bpool.
The difference between the two parallel determination results is not more than 0.010, the arithmetic average of the measurement results.
The results should be GB/T 8170 rounding to two decimal places.
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