dye|World dye variety

Name:C.I.Direct Orange 4,C.I.22920

Molecular Structure: Double azo class

C.I.Direct Orange 4,C.I.22920,CAS 3626-38-8,716.57,C24H18N10Na2O10S2,Pyramine Orange R

Molecular Formula:C₂₄H₁₈N₁₀Na₂O₁₀S₂

Molecular Weight: 716.57

CAS Registry Number:3626-38-8

Manufacturing Methods : 4,4′-Diamino-3,3′-Biphenyldisulfonic acid double nitriding, and 4-Nitrobenzene-1,3-diamine (2 Moore) coupled.

Properties and Applications: bright orange. Moderate soluble in water for palm light orange, slightly soluble in ethanol for golden brown. The strong sulfuric acid for golden brown. After diluted for orange brown. The dye solution to join strong hydrochloric acid for orange heavy red light brown, have precipitation; Add thick sodium hydroxide solution for orange light brown, have precipitation. Can be used for cotton dyeing, good levelness. Neutral and alkaline white good to very good.

List of Suppliers:

Pyramine Orange R( Badische Anilin-und Soda Fabrik )