Direct Orange 26, CAS 3626-36-6, Direct Orange S, China Direct Orange 26 Supplier


Direct Orange 26

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Product Name: Direct Orange 26
Chemical Name: Disodium 7,7′-(carbonyldiimino)bis[4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate]
Synonyms: 
Disodium 7,7′-(carbonyldiimino)bis[4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate]; Direct orange s; 2-Naphthalenesulfonic acid, 7,7-(carbonyldiimino)bis4-hydroxy-3-(phenylazo)-, disodium salt; 7,7′-(carbonyldiimino)bis[4-hydroxy-3-(phenylazo)-2-naphthalenesulfonic acid; Benzo Orange S; Direct Orange 26; Chlo-ramine Fast Orange S; Chlorazol Orange R.
CAS No: 3626-36-6
MF: C33H22N6Na2O9S2
MW: 756.6
Category:
Direct Orange
Structure: 

Descriptions:
Golden yellow powder. Water-soluble in general, more sensitive to hard water. Aqueous solution was red orange, concentrated alkali was orange; add dilute alkali slightly yellow. Slightly soluble in ethanol was golden orange. In concentrated sulfuric acid was bright red, diluted red orange to red precipitate; concentrated nitric acid in a dark yellow precipitate.

Use:
Direct orange S for dyeing cotton and viscose fiber was red orange, shift the dye is poor, sensitive to salt, the dye up rate. Also used for direct printing of cotton and viscose fabrics, especially in viscose fabrics. Can be used alone, but also with yellow, red, gray, brown and other colors to fight to adjust shade, increase the chromatography. Can also be used for silk, wool, vinylon, nylon dyeing and direct printing of silk fabrics.

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 Golden yellow powder
Content 100%
Moisture ≤0.1%
Insoluble ≤0.1%
Melting point /