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GB/T 6324.7-2014: Test method of organic chemical products -- Part 7: Determination of molten color
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| GB/T 6324.7-2014 | English | 169 |
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Test method of organic chemical products -- Part 7: Determination of molten color
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GB/T 6324.7-2014
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Basic data | Standard ID | GB/T 6324.7-2014 (GB/T6324.7-2014) | | Description (Translated English) | Test method of organic chemical products -- Part 7: Determination of molten color | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G17 | | Classification of International Standard | 71.080.01 | | Word Count Estimation | 7,796 | | Date of Issue | 12/31/2014 | | Date of Implementation | 7/1/2015 | | Regulation (derived from) | National Standards Bulletin 2014 No. 33 | | 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 | GB/T 6324.7-2014: Test method of organic chemical products -- Part 7: Determination of molten color
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Test method of organic chemical products - Part 7. Determination of molten color
ICS 71.080.01
G17
National Standards of People's Republic of China
Test Method for Organic chemical products
Part 7. Determination of melting chroma
Part 7. Determinationofmoltencolor
Issued on. 2014-12-31
2015-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 6324 "Test Methods for Organic Chemical Products" is divided into the following sections.
--- Part 1. Liquid water-miscible organic chemical products test;
--- Part 2. Determination of the volatile organic liquid residue after evaporation of the water bath dry;
--- Part 3. Determination of permanganate reducing substances;
--- Part 4. organic liquid chemicals - Determination of trace sulfur Microcoulomb;
--- Part 5. Determination of organic chemical products of carbonyl compounds content;
--- Part 6. Determination of liquid chroma tristimulus colorimetry;
--- Part 7. Determination of melting chroma;
--- Part 8. Determination of liquid product moisture Karl Fischer Coulomb law.
This section GB/T 76324 Part of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee Chemistry Organic Chemicals Branch (SAC/TC63/SC2) centralized.
This section drafted by. China Petroleum & Chemical Co., Ltd. Beijing Chemical Engineering Institute, Nantong Star synthetic material Limited, Sea
Chemical (Rugao) Co., Ltd.
Participated in the drafting of this section. Yun Ding Shanghai International Trade Co., Ltd., Overseas Friends of Chemical Co., Ltd. Shanxi, China National Petroleum shares
Liaoyang Petrochemical Company Limited.
The main drafters of this section. Gao Jing, Li Mei Li, Yu Huang, Chen Yu Wen, Guo Yanling, such as Yan Fan, Xue Jianjun, Ji Ke Jun, Lei Wei Ping, Huang Yong,
Dan Gaolong.
Test Method for Organic chemical products
Part 7. Determination of melting chroma
1 Scope
GB/T 6324 This section specifies the method by visual colorimetry and tristimulus colorimetric determination of molten color.
This section applies to the determination is solid at room temperature, in a molten state with no visible turbidity chromaticity organic chemical products.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 603 chemical reagent in test methods - Preparations with
GB/T 3143 liquid chemical products Determination of color (Hazen unit --- platinum - cobalt color number)
GB/T 6324.6 organic chemical products - Test methods - Part 6. Determination of liquid chroma tristimulus colorimetry
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 9721 Chemicals General molecular absorption spectrophotometry (UV and visible part)
Test Method 3
Warning. some of the test methods specified in the process can lead to dangerous situations, the operator should take appropriate safety and health practices.
3.1 General provisions
Unless otherwise indicated in the analysis using only recognized as analytical reagents and in line with GB/T 6682 tertiary water.
Used in the analysis and formulation of products, in the absence of other specified requirements, prepared according to GB/T 603's.
3.2 visual colorimetry
3.2.1 Method summary
The test sample was heated at a preset temperature to melt completely, the color of the sample immediately after thawing and standard platinum - cobalt colorimetric solution color mesh
Comparison of measured and platinum - cobalt color number shows the results.
3.2.2 Instruments
3.2.2.1 Nessler colorimetric tube. 50mL; heat-resistant material shall meet the requirements of the melting temperature of the sample; glass color and scale line should be the same height.
3.2.2.2 Electric heating block. aluminum, performance requirements, see Appendix A. Other heating requirements can be achieved and the precision of the heating device may also be used.
3.2.2.3 colorimetric tube frame. Usually the color than the bottom rack white floor lining the bottom mirror can also be safe there, observe the color to enhance the effect.
3.2.2.4 Spectrophotometer. shall comply with GB/T 9721's.
3.2.3 Preparations
3.2.3.1 platinum - cobalt color standard preparation liquor ratio (500Hazen unit)
Commercially or in accordance with GB/T 3143 formulated. The mother liquor can be used standard colorimetric spectrophotometer cuvette than 1cm of the following wavelengths
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