dye|World dye variety

Name:C.I.Acid Green 19,C.I.20440

Molecular Structure: Double azo class

C.I.Acid Green 19,C.I.20440,CAS 5850-34-0,690.44,C26H15Cl2N5Na2O7S2, Nylon Green SW,Sapphire G,Milling Green B,Acid Wool Green SS

Molecular Formula:C₂₆H₁₅C1₂N₅Na₂O₇S₂

Molecular Weight: 690.44

CAS Registry Number:5850-34-0

Manufacturing Methods : 2,5-Dichlorobenzenamine diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid in acid conditions coupled, its product again with diazo of Naphthalen-1-amine in alkaline conditions coupled.

Properties and Applications: Dark blue light green. Soluble in water for blue light green, and partly dissolved in ethanol. The strong sulfuric acid for blue-ray black, diluted change to blue. The dye solution to join strong hydrochloric acid for blue-ray green; Add thick sodium hydroxide solution for red light blue.

List of Suppliers:

Marvanyl Sapphire G 100% (Classic Dyestuffs Inc)

Orco Milling Green B Conc. ( Organic Dyestuffs Corp )

Shikiso Acid Wool Green SS( Kaseihin Kogyo Kyokai )

Sumitomo Nylon Green SW( Kaseihin Kogyo Kyokai )