Direct Yellow 44

CAS: 8005-52-5

Ref. 3D-IAA00552

Product Information

• Name: Direct Yellow 44
• Synonyms: Aizen Primula Yellow GCLH, Benzoic acid, 5-[(4-aminophenyl)azo]-2-hydroxy-, reaction products with 3-[(4-amino-3-methoxyphenyl)azo]benzenesulfonic acid and carbonic dichloride, sodium salts, Direct Fast Yellow 5GL, Direct Fast Yellow 5GLL, Direct Fast Yellow GC, Direct Yellow 44, Helion Yellow G, Intralite Yellow 5GLL, Isma Fast Yellow G, RD Yellow 2, Saturn Yellow L 4G, Sirius yellow GC, Solar Flavine 2G, Tetramine Fast Yellow GD Extra, disodium 2-hydroxy-5-[(E)-{4-[({2-methoxy-4-[(E)-(3-sulfonatophenyl)diazenyl]phenyl}carbamoyl)amino]phenyl}diazenyl]benzoate
• CAS: 8005-52-5

Description

Direct Yellow 44 (DY44) is a reactive dyestuff that belongs to the group of quinacridone dyes. It is a sodium salt of an alkynyl-substituted benzoyl chloride. The carbonyl group at the 3-position of the benzoic acid moiety is involved in the reaction with sodium carbonate, forming a copper complex. DY44 undergoes an oxidative polymerization reaction with polyvinyl acetate and copper ions. The dichroic and polarizing properties are due to the presence of two reactive groups, hydroxyl and alkynyl groups. DY44 has been shown to react with chlorine atoms under acidic conditions, forming a polymer film on the surface of nylon fabrics.

• Brand: Biosynth

Chemical properties

• Molecular weight: 634.53 g/mol
• Formula: C₂₇H₂₀N₆Na₂O₈S
• Color/Form: Powder