Acid Blue 25(CAS 6408-78-2)

Acid Blue 25

Name:C.I.Acid Blue 25,C.I.62055

Molecular Structure: anthraquinones

C.I.Acid Blue 25,C.I.62055,CAS 6408-78-2/2786-71-2/37218-11-4,416.38,C20H13N2NaO5S,Weak Acid Blue AS,Weak Acid Brilliant Blue R,Acid Blue 2AL,Acid Blue 2RL,Acid Blue AS

Molecular Formula:C₂₀H₁₃N₂NaO₅S

Molecular Weight: 416.38

CAS Registry Number:6408-78-2/2786-71-2/37218-11-4

Manufacturing Methods : (a) 1-Amino-2,4-dibromoanthracene-9,10-dione with aniline condensation, its product 1-amino-4- anilino-2-bromo-anthraquinone in phenol in pressure with aqueous sodium sulfite, were hot. (b) the 1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid (sodium) in water medium copper salt as the catalyst used with aniline condensation.

Properties and Applications: blue. Blue powder. The little blue soluble in water, but soluble in acetone, ethanol, slightly soluble in benzene, four hydrogen naphthalene, insoluble in nitrobenzene and xylene. Meet strong sulfuric acid as dark, after diluted blue precipitation. Mainly used for dyeing nylon, polyamide for supporting the dye. Can also be used for wool, silk and blended fabric dyeing and printing directly. Can also be used in leather, electrical-controlled aluminum soap and color.