dye|World dye variety

Name:C.I.Direct Orange 28,C.I.40065

Molecular Structure: Stilbenes

Molecular Formula:

Molecular Weight:

CAS Registry Number:1325-49-1

Manufacturing Methods : 2-Methyl-5-nitrobenzenesulfonie acid sodium hydroxide solution at reflux under heating together with Benzene-1,4-diamine, the molecular ratio of 2:1.

Properties and Applications: dark red light orange. Soluble in water for orange, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for red purple, dilute precipitation after brown; In nitric acid partly dissolved, for red light brown solution, and then to yellow brown solution.

List of Suppliers:

Diphenyl Orange RR( Geigy Co. Ltd )