Factory Supply Acid Blue 281 - Factory Supply Acid Green 20 For Leather –

Synonyms:
2,7-Naphthalenedisulfonic acid, 4-amino-3-(2-(4-aminophenyl)diazenyl)-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2); 2,7-Naphthalenedisulfonic acid, 4-amino-3-((p-aminophenyl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt; 2,7-Naphthalenedisulfonic acid, 4-amino-3-((4-aminophenyl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt; Disodium 4-amino-3-((4-aminophenyl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate; disodium (3E)-5-amino-6-[(E)-(4-aminophenyl)diazenyl]-4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2,7-disulfonate; disodium 4-amino-3-(4-aminophenyl)azo-5-hydroxy-6-phenylazo-naphthalene-2,7-disulfonate; Amido Green Black B

Appearance:Green to black powder.
Solubility:Soluble in water.The aqueous solution is dark blue green; Soluble in ethylene glycol ether, slightly soluble in ethanol, insoluble in other organic solvents.
Melting Point:>300℃

Application:
It is suitable for dyeing wool, silk and wool blended fabrics. It is also used for direct printing of wool, silk and nylon fabrics. When used for dyeing wool and other fibers in the same bath, acetate fiber chemicalbook is not stained, and cellulose fiber is slightly stained. When dyeing, the color light in case of copper ion is basically unchanged, and the color light in case of iron ion is light and dark. Discharge is moderate. It can also be used for coloring leather and paper.
Quality guarantee period: 24 months.
Packing: 25kgs iron drum.
Storage:Store in a cool and ventilated room and prevent moisture and heat.