Name:C.I.Acid Blue 7,C.I.42080 Molecular Structure: triarylmethane class C.I.Acid Blue 7,C.I.42080,CAS 3486-30-4,690.81,C37H35N2NaO6S2,Acid Turquoise Blue A,Acid Turquoise Blue 2G,Acid Sky Blue A Molecular Formula:C37H35N2NaO6S2 Molecular Weight: 690.81 CAS Registry Number:3486-30-4 2.Properties and Applications: colourful green light blue. Blue powder. Soluble in water, but soluble in ethanol is blue. The strong sulfuric acid are olive green, yellow precipitation after diluted. A transparent green light blue aqueous solution at room temperature without gathered tendency, add sodium hydroxide subject to change after cooling,heated to boiling color from blue to violet precipitate. In dyeing copper and iron ions become dark green color. For heavy chromate salt not sensitive. For wool, silk and polyamide fiber fabric dyeing and printing, and can also be used in leather, paper, cosmetics, soap, biological and rubber color. Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater Fading Stain Fading Stain Fading Stain ISO 2 3 3-4 3 2 2-3 3 3 AATCC 1 3 3 3 2 2 3 2 3.International Similar Brand Acid Sky Blue A Patent Blue A Youhaotracid Blue GS AACL Patent Blue AS 250% ABCOL Patent Blue A Conc. Acid Blue A Acid Blue A 100% Acid Blue AS

CAS NO:3486-30-4

EC NO:222-476-0

Molecular Formula:C₃₇H₃₅N₂NaO₆S₂

Molecular Weight:690.8034

Synonyms:C.I. 42080;C.I. Acid Blue 7;C.I. Acid Blue 7, sodium salt;C.I. Acid Blue 7 (7CI);C.I. Acid Blue 7, sodium salt (8CI);Acid blue 7;Acid Blue 7;Patent Blue A;Acid Blue 7 (42080);sodium 4-[(E)-{4-[benzyl(ethyl)amino]phenyl}{(4E)-4-[benzyl(ethyl)iminio]cyclohexa-2,5-dien-1-ylidene}methyl]benzene-1,3-disulfonate;

Molecular Structure: