Name:C.I.Direct Yellow 42,C.I.29010
Molecular Structure: Double azo class
Molecular Weight: 683.01
CAS Registry Number:8005-54-7
Manufacturing Methods : 5-Amino-2-chlorobenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupled to compounds (A); 4-Nitrobenzenamine diazo, coupled with 2-Hydroxybenzoic acid, and then will the nitro reduction for amino, compound (B). Then will molecules of the A and B mixture phosgenation (refer to C.I.Direct Yellow 26, C.I. 25300).
Properties and Applications: red light yellow. Soluble in water and ethanol is yellow. The strong sulfuric acid to purplish red color, diluted becomes shallow, with brown precipitation. The dye solution to join strong hydrochloric acid have dark purple precipitation; Add thick sodium hydroxide solution for yellow. Used for cellulose fiber dyeing, leather and paper color. 60 ~ 80 ℃ : the biggest dyeing affinity, good levelness.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
List of Suppliers:
Diazol Light Yellow RLN( Francolor Pigments SA )