Acid Blue 70
Name:C.I.Acid Blue 70,C.I.17000
Molecular Structure: Single azo,Metal Complexes
Molecular Formula:C20H13N3Na2O8S2
Molecular Weight: 533.44
CAS Registry Number:1323-94-0
Manufacturing Methods : 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid diazo, and 5-Aminonaphthalen-1-ol in acetic acid medium coupling.
Properties and Applications: green light blue. Soluble in water for purple. The strong sulfuric acid in blue, diluted began to change color, and then into a purple. In water solution to join hydrochloric acid colour and lustre is basic unchanged; Add thick sodium hydroxide solution for orange.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 4 | 3 | 2 | 2 | 3 |
List of Suppliers:
Lanacyl Blue BB( Carbotex Consultants )