GB/T 37038-2018DSD acid (4,4’-Diaminostilbene-2,2’diasulfonicacid) (English PDF)
DSD酸(4，4′-二氨基二苯乙烯-2，2′-二磺酸)
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 28, 2018
Implementation date
November 1, 2019
Scope
GB/T 37038-2018 is the English-translated version of DSD酸(4，4′-二氨基二苯乙烯-2，2′-二磺酸).
GB/T 37038-2018 is the Chinese national standard for DSD acid, 4,4'-diaminostilbene-2,2'-disulfonic acid, CAS 81-11-8, the intermediate from which optical brighteners and direct dyes are made.
It gives the requirements - appearance and the limits on the main content, on moisture and on the impurities that matter downstream - the sampling, the test methods, the inspection rules and the provisions on marking, labelling, packaging, transport and storage.
It applies to the quality control of DSD acid. Producers of the intermediate, brightener and dye works and their laboratories use it. Issued on 28 December 2018, it has applied since 1 November 2019.
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Document preview — GB/T 37038-2018
National Standard of the People's Republic of China
- ICS
- 71.100.01; 87.060.10
- Classification
- G 56
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Requirements
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the requirements, sampling, test methods, inspection rules for DSD acid (4,4'-diaminostilbene-2,2'-disulfonic acid). Marking, labeling, packaging, transportation and storage. This standard applies to product quality control of DSD acid. Structure.
Molecular formula. C14H14N2O6S2 Relative molecular mass. 370.40 (according to the international relative atomic mass in.2015) CASRN. 81-11-8
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.
Preparation of GB/T 601 chemical reagent standard titration solution Preparation of preparations and products used in GB/T 603 chemical reagent test method
GB/T 2381-2013 Determination of insoluble matter content of dyes and dye intermediates
GB/T 2386-2014 Determination of moisture in dyes and dye intermediates
GB/T 3049-2006 General method for determination of iron content of industrial chemical products 1,10-phenanthroline spectrophotometric method (ISO 6685:1982, IDT)
GB/T 6678-2003 General rules for sampling of chemical products
GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696:1987, MOD)
GB/T 8170-2008 Numerical rounding rules and the representation and determination of limit values Limit and determination of heavy metal elements in GB 20814 dye products
GB/T 21876-2015 Determination of ash content of solvent dyes and dye intermediates
3 Requirements
The quality of DSD acid should meet the requirements of Table 1.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 21 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2381-2013Dyestuffs and intermediate of dyestuffs - Determination of content of insoluble matters
- GB/T 2386-2014Dyestuffs and intermediate of dyes - Determination of moisture content
- GB/T 3049-2006Chemical products for industrial use - General method for determination of iron content. 1, 10-Phenanthroline spectrophotometric method
- GB/T 6678-2003General principles for sampling chemical products
- GB/T 6682-2008Water for analytical laboratory use - Specification and test methods
- GB/T 8170-2008Rules of rounding off for numerical values & expression and judgement of limiting values
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Related Standards
GB/T 21876-2015 — Solvent dyes and intermediate of dyes - Determination of ash content
GB/T 2381-2013 — Dyestuffs and intermediate of dyestuffs - Determination of content of insoluble matters
GB/T 2386-2014 — Dyestuffs and intermediate of dyes - Determination of moisture content
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GB/T 37038-2018
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