GB/T 2379-2020 English PDF

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GB/T 2379-2020: Acid complex dyes. Determination of shade and relative strength
Status: Valid

GB/T 2379: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2379-2020	119	Add to Cart	3 days	Acid complex dyes. Determination of shade and relative strength	Valid
GB/T 2379-2013	239	Add to Cart	3 days	Acid complex dyes -- Determination of dyeing shade and relative strength	Obsolete
GB/T 2379-2003	199	Add to Cart	2 days	Acid complex dyes -- Determination of dyeing shade and relative strength	Obsolete
GB/T 2379-1980	199	Add to Cart	2 days	Method for the determination of shade and colouring strength for metal complex acid dyes	Obsolete

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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Older Standard (superseded by this standard): GB/T 2379-2013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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