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GB/T 2379-2020: Acid complex dyes. Determination of shade and relative strength
Status: Valid GB/T 2379: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 2379-2020 | English | 119 |
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Acid complex dyes. Determination of shade and relative strength
| Valid |
GB/T 2379-2020
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| GB/T 2379-2013 | English | 239 |
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Acid complex dyes -- Determination of dyeing shade and relative strength
| Obsolete |
GB/T 2379-2013
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| GB/T 2379-2003 | English | 199 |
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Acid complex dyes -- Determination of dyeing shade and relative strength
| Obsolete |
GB/T 2379-2003
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| GB/T 2379-1980 | English | 199 |
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Method for the determination of shade and colouring strength for metal complex acid dyes
| Obsolete |
GB/T 2379-1980
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PDF similar to GB/T 2379-2020
Basic data | Standard ID | GB/T 2379-2020 (GB/T2379-2020) | | Description (Translated English) | Acid complex dyes. Determination of shade and relative strength | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G51 | | Classification of International Standard | 71.100.01; 87.060.10 | | Word Count Estimation | 6,655 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-05-01 | | Older Standard (superseded by this standard) | GB/T 2379-2013 | | Quoted Standard | GB/T 2374-2017 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the method for determining the shade and intensity of acid complex dyes. This standard applies to the determination of the shade and intensity of acid complex dyes. | GB/T 2379-2020: Acid complex dyes. Determination of shade and relative strength---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.
(Determination of shade and intensity of acid complex dyes)
ICS 71:100:01;87:060:10
G55
National Standards of People's Republic of China
Replace GB/T 2379-2013
Determination of shade and intensity of acid complex dyes
2020-12-14 release
2021-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard replaces GB/T 2379-2013 "Determination of Dyeing Shade and Intensity of Acid Complex Dyes", and is consistent with GB/T 2379-2013
Compared with the editorial changes, the main technical changes are as follows:
---The standard name was revised to "Determination of Shade and Intensity of Acid Complex Dyes";
---The preparation of the dye liquor of the wool dyeing method is modified to the preparation of the dye liquor of the dyeing method (see 5:1:3, 6:2:1 of the:2013 edition);
---Revised the result evaluation (see 5:1:6, 6:4 in the:2013 edition);
---Added solution colorimetry (see 5:2):
This standard was proposed by the China Petroleum and Chemical Industry Federation:
This standard is under the jurisdiction of the National Dyestuff Standardization Technical Committee (SAC/TC134):
Drafting organizations of this standard: Zhejiang Dajing Chemical Co:, Ltd:, Qingdao Gulf Fine Chemical Co:, Ltd:, Shenyang Chemical Research Institute Co:, Ltd:,
Shenyang Shenhua Institute Testing Technology Co:, Ltd:, National Dyestuff Quality Supervision and Inspection Center:
The main drafters of this standard: Yang Yaosen, Ma Junqing, Song Zhixin, Li Jingyi, Ji Lanqin, Chen Baoxing, Dong Zhongsheng, Gu Yongfeng, Zhang Liangliang:
The previous versions of the standard replaced by this standard are as follows:
---GB 2379-1980, GB/T 2379-2003, GB/T 2379-2013:
Determination of shade and intensity of acid complex dyes
1 Scope
This standard specifies the method for determining the shade and intensity of acid complex dyes:
This standard applies to the determination of the shade and intensity of acid complex dyes:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 2374-2017 Regulations of general conditions for dye dyeing determination
3 Reagents and materials
The reagents used should meet the requirements of Chapter 3 in GB/T 2374-2017:
4 Apparatus and equipment
The equipment used should comply with the provisions of Chapter 4 in GB/T 2374-2017:
The main instruments and equipment required are as follows:
a) Analytical balance: accuracy 0:0001g;
b) Dyeing machine for laboratory;
c) Color measuring instrument;
d) Spectrophotometer:
5 Test method
5:1 Staining method
5:1:1 Principle
Samples and standard samples of the same species are used for dyeing on certain specifications of wool or nylon textiles under the same conditions: By standard
The dyeing intensity of the quasi-sample is 100 points, and the color light is the standard: Visual comparison is performed to evaluate the color light and intensity of the sample, or use a colorimeter to measure the sample
The shade and intensity:
5:1:2 General conditions
The general dyeing conditions should meet the relevant regulations of GB/T 2374-2017: The choice of dyeing method should be based on specific varieties, performance, and
The principle is to give the highest color power: The dyeing depth is selected according to the specific variety and meets the requirements of 5:1:2:1 in GB/T 2374-2017:
5:1:3 Preparation of dye solution
According to the dyeing depth of the corresponding dye product, use an analytical balance to accurately weigh a certain amount of sample and standard sample (accurate to 0:0005g),
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