GB/T 33786-2017Reactive red LS-7B(C.I.Reactive red 250) (English PDF)
反应红LS-7B(C.I.反应红250)
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 31, 2017
Implementation date
December 1, 2017
Scope
GB/T 33786-2017 is the English-translated version of 反应红LS-7B(C.I.反应红250).
GB/T 33786-2017 is the Chinese national product standard for reactive red LS-7B, the dye also listed as C.I. Reactive Red 250.
It sets the requirements, sampling, test methods and inspection rules for the product, together with its marking, labelling, packaging, transport and storage, and records the molecular formula C31H20ClN7Na4O16S5, a relative molecular mass of 1036.26 and CAS RN 669081-51-0.
The properties are checked by the dye methods it cites, among them GB/T 2374 for dyeing conditions, GB/T 2387 for shade and strength, GB/T 2391 for fixation rate and GB/T 3920, GB/T 3921, GB/T 3922, GB/T 6152 and GB/T 8427 for colour fastness.
Dye makers and the laboratories that check their batches use it for product quality control. It was issued on 31 May 2017 and has applied since 1 December 2017.
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Document preview — GB/T 33786-2017
National Standard of the People's Republic of China
- ICS
- 71.100.01; 87.060.10
- Classification
- G 57
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative reference documents
Foreword
This standard is 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, and marking of reactive red LS-7B (CI Reactive Red 250) products. Sign, package, transport and storage.
This standard applies to product quality control of reactive red LS-7B.
Structure. Molecular formula. C31H20ClN7Na4O16S5 Relative molecular mass. 1036.26 (according to 2013 International relative atomic mass) CASRN. 669081-51-0
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 document. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 2374-2017 General conditions for dye dyeing determination
GB/T 2381-2013 Determination of insoluble matter content of dyes and dye intermediates
GB/T 2386-2014 Determination of moisture content of dyes and dyes intermediates
GB/T 2387-2013 Determination of color and intensity of reactive dyes
GB/T 2390 Determination of dye pH
GB/T 2391-2014 Determination of fixation rate of reactive dyes
GB/T 3671.1-1996 Determination of solubility and solution stability of water - soluble dyes
GB/T 3920-2008 Textiles - Tests for color fastness - Color fastness to rubbing
GB/T 3921-2008 Textiles - Tests for color fastness - Color fastness to soaping
GB/T 3922-2013 Textiles - Tests for color fastness - Color fastness to perspiration
GB/T 4841.1-2006 Dye dyeing standard depth card 1/1
GB/T 6152-1997 Textiles - Tests for color fastness - Color fastness to heat press
GB/T 6678-2003 General rules for sampling of chemical products
GB/T 6688-2008 Determination of Relative Strength and Color Difference of Dyes by Instrument Method
GB/T 6693-2009 Dye dust - Determination of flying capacity
GB/T 8427-2008 Textiles - Tests for color fastness - Color fastness to artificial light. Xenon arcs
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2374-2017Dyestuffs - General rules for the dyeing test
- 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 2387-2013Reactive dyes — Determination of shade and relative strength
- GB/T 2390Dyes - Determination of pH value
- GB/T 2391-2014Reactive dyes - Determination of degree of fixation
Similar standards
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Related Standards
GB/T 2374-2017 — Dyestuffs - General rules for the dyeing test
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 33786-2017
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