| Identification | Back Directory | [Name]
disodium 4,5-dihydro-5-oxo-4-(phenylazo)-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate | [CAS]
1934-22-1 | [Synonyms]
C.I.19130
C.I.Acid Yellow 27
Tartrazine Impurity 5
C.I.Acid Yellow 27:C.I.19130
disodium 4,5-dihydro-5-oxo-4-(phenylazo)-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
4,5-Dihydro-5-oxo-4-(phenylazo)-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid disodium salt | [EINECS(EC#)]
217-700-9 | [Molecular Formula]
C16H10N4Na2O6S | [MOL File]
1934-22-1.mol | [Molecular Weight]
432.318 |
| Hazard Information | Back Directory | [Preparation]
aniline diazo, and 5-Oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid coupling. | [Properties and Applications]
yellow. Soluble in water, ethanol, acetone yellow. The strong sulfuric acid to tan, diluted to become red, and then a tan hairy precipitation. Its water solution and strong hydrochloric acid have brown yellow light precipitation; Add sodium hydroxide have precipitation. Used for wool, silk, vinegar fine fiber dyeing and leather and paper color, also can be used as organic pigments.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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4
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1
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5
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4
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1
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5
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2-3
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