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Reactive dyes -- Determination of substantivity
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Basic data
Standard ID: GB/T 33075-2016 (GB/T33075-2016)
Description (Translated English): Reactive dyes -- Determination of substantivity
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G55
Classification of International Standard: 71.100.01; 87.060.10
Word Count Estimation: 6,632
Date of Issue: 2016-10-13
Date of Implementation: 2017-05-01
Regulation (derived from): National Standard Notice No.1716 of 2016
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 33075-2016: Reactive dyes -- Determination of substantivity
---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.
Reactive dyes - Determination of substantivity
ICS 71.100.01; 87.060.10
G55
National Standards of People's Republic of China
Determination of the directness of reactive dyes
2016-10-13 released
2017-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard is under the jurisdiction of the National Dye Standardization Technical Committee (SAC/TC134).
The drafting of this standard. Hangzhou Jihua Jiangdong Chemical Co., Ltd., Shenyang Chemical Industry Research Institute Co., Ltd., the national dye quality supervision and inspection
center.
The main drafters of this standard. Ji Lanqin, Chen Meifen, Yang Zhenmei.
Determination of the directness of reactive dyes
1 Scope
This standard specifies the determination of the directness of reactive dyes.
This standard is applicable to the determination of the directness of KN and M reactive dyes.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
General conditions for determination of dye dyeing
3 principle
The samples were stained on cotton yarns, and the absorbance values of the stained residues and the absorbance values of the standard dyes were calculated by staining for 30 min (before alkali addition)
The dyeing percentage of the sample on cotton fiber for 30 min. The reproducibility of the reactive dyes was indicated by the percentage of dyeing up to 30 min.
4 reagents and materials
Reagents and materials shall comply with the relevant provisions of 3.1 of GB/T 2374-2007.
5 instruments and equipment
The equipment and equipment shall comply with the relevant provisions of Chapter 4 of GB/T 2374-2007. Instruments and equipment are as follows.
a) spectrophotometer;
b) Laboratory dyeing machine.
6 test method
6.1 Dyeing conditions
The dyeing conditions should meet the following requirements.
a) Dyeing depth. 1% (owf);
b) dyeing fiber. cotton yarn, 10g;
c) dyeing bath ratio. 1.20;
d) Dyeing time. 30 min;
e) Dyeing temperature. 60 ° C;
f) anhydrous sodium sulfate. 60 g/L.
......
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