Direct Red 31
Detailed information about the product’s features, specifications, and applications.
Direct Red 31
C.I.Direct Red 31
C.I.29100
CAS:5001-72-9
Synonymous names:Atul Direct Red 12B (AP);Concorde Direct Red BB (IHWA);Direct Pink 12B (NJC,NIEC);Direct Pink Red 12B (JIAN);Direct Red 12B (STIE,HEB,WUXI);Dycosdirect Red 12B (SHC);Kayaku Direct Rhoduline Red B (KYK);Nippon Fast Red BB (NSK); Pyrazol Pink 2B (CLAR);Red 12B (SLIE);Solar Pink 2B (CLAR)
More About This Dye
Description
C.I.Direct Red 31
C.I.29100
CAS:5001-72-9
Synonymous names:Atul Direct Red 12B (AP);Concorde Direct Red BB (IHWA);Direct Pink 12B (NJC,NIEC);Direct Pink Red 12B (JIAN);Direct Red 12B (STIE,HEB,WUXI);Dycosdirect Red 12B (SHC);Kayaku Direct Rhoduline Red B (KYK);Nippon Fast Red BB (NSK); Pyrazol Pink 2B (CLAR);Red 12B (SLIE);Solar Pink 2B (CLAR)
Physicochemical Properties: Reddish-brown powder. Soluble in water (magenta), slightly soluble in ethanol (reddish-orange). In concentrated sulfuric acid, it appears orange to reddish-brown.
Applications: Dyes cellulose fibers bluish-red with good exhaustion and leveling. Suitable for direct printing. Post-treatment with fixing agent Y improves wet fastness. Also used for silk, nylon, and paper pulp.





