Name:C.I.Direct Red 39,C.I.23630
Molecular Structure: Double azo class
Molecular Weight: 704.68
CAS Registry Number:6358-29-8
Manufacturing Methods : 3,3′-Dimethylbenzidine double nitriding, first and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling, and then coupled with phenol, finally under certain pressure and heat monomer (VCM), hydroxyl ethyl of phenol.
Properties and Applications: blue-ray red. Soluble in water for blue-ray red, slightly soluble in ethanol and acetone. The strong sulfuric acid in purple to red light blue for, for after diluted purplish red. The dye solution to join strong hydrochloric acid for Red sauce, precipitation; Add thick sodium hydroxide solution for palm light orange, precipitation.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
List of Suppliers:
Kayaku Direct Scarlet 3B(Nippon Kayak u Co Ltd)
Shikiso Direct Scarlet 3B( Kaseihin Kogyo Kyokai )