Direct Red 23

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Product Name: Direct Red 23
C.I: 29160
Chemical Name:
Synonyms:  
BENZO FAST SCARLET;CI 29160;DIRECT FAST SCARLET 4BS; DIRECT RED 23; Disodium 3-[(4-acetamidophenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate;
CAS No: 3441-14-3
MF: C35H25N7Na2O10S2
MW: 813.72
Category:
Direct dyes
Structure: 

Descriptions:
Purple red powder. Water-soluble medium, soluble in water was bright red, dilute sulfuric acid solution to its light blue, add concentrated hydrochloric acid to produce wine red precipitate, add concentrated alkali to red orange-brown. Slightly soluble in ethanol, orange, insoluble in acetone.

Use:
Mainly used for cotton, linen, rayon and other fabrics dyeing, especially for cotton knitwear dyeing, can also be used for silk, nylon and other fabrics dyeing。
It is also used for cotton, rayon, hemp and other fiber fabric dyeing and printing, can also be used for silk, wool dyeing, can also be used for paper, leather dyeing, as well as for the manufacture of lake pigments.
Storage: Storage should be cool and ventilated, away from heat, fire, to prevent sun exposure, heat is strictly prohibited.
Package: 25kg PP bag for solid powder. 200L or 250KG Drum for Liquid.

Specifications:

Appearance Purple red powder
Content 100% strength
Moisture ≤0.1%
Insoluble ≤0.1%
Melting point /