Acid Red 176
Name:C.I.Acid Red 176,C.I.16575
Molecular Structure: Single azo class
Molecular Formula:C16H9N3Na2O10S2
Molecular Weight: 513.37
CAS Registry Number:548-80-1
Manufacturing Methods : 4-Nitrobenzenamine diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling.
Properties and Applications: blue-ray red. Soluble in water for yellow light red, not soluble in alcohol. The strong sulfuric acid for dark purple, diluted into yellow light red solution. In water solution to join hydrochloric acid solution to become yellow, add sodium hydroxide for blue-ray red.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 6-7 | 4 | 4 | 4-5 |
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