Acid Black 16
Name:C.I.Acid Black 16,C.I.20345
Molecular Structure: Double azo class
C.I.Acid Black 16,C.I.20345,CAS 5863-90-1,616.49,C22H14N6Na2O9S2,Acid Leather Black IRW
Molecular Formula:C22H14N6Na2O9S2
Molecular Weight: 616.49
CAS Registry Number:5863-90-1
Manufacturing Methods : 4-Aminobenzenesulfonic acid diazo in inorganic acid medium, and 4-Amino-5-hydroxynaphthalene-1-sulfonic acid coupling, and then 4-Nitrobenzenamine diazo again, and the generation of single accidentally coupled nitrogen compounds.
Properties and Applications: black. Soluble in water, slightly soluble in ethanol, very few soluble in acetone, insoluble in benzene. In the dark for the strong sulfuric acid, diluted for purple. Suitable for leather color.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 6 | 3 | 3-4 | 3 | 1 | 3-4 | ||
| AATCC | 8 | 1 | 1 | 5 | 3 | 4 | ||
List of Suppliers:
Acid Leather Black IRW( CBW Chemie GmbH Bitterfeld-Wolfen )