dye|World dye variety

Name:C.I.Direct Red 62,C.I.29175

Molecular Structure: Double azo class

C.I.Direct Red 62,C.I.29175,CAS 6420-43-5,886.77,C35H25N6Na3O12S3,ACDI Paper Orange 3R,Direct Brilliant Orange 3RC,Orange RS,Orange F3R

Molecular Formula:C₃₅H₂₅N₆Na₃O₁₂S₃

Molecular Weight: 886.77

CAS Registry Number:6420-43-5

Manufacturing Methods : 4-Amino-3-methylbenzenesulfonic acid diazo, in acetic acid medium and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, O-Methylaniline diazo, in alkaline conditions and accidentally coupled nitrogen compounds.

Properties and Applications: colourful yellow red. Soluble in water for colourful red, insoluble in ethanol as a pale orange red, insoluble in other organic solvents. The strong sulfuric acid in red for quality, to orange diluted. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; Add thick sodium hydroxide solution have red light orange brown precipitation.

List of Suppliers:

ACDI Paper Orange 3R(Aakash Chemicals & Dyestuffs Inc)

Direct Brilliant Orange 3RC(Yorkshire Group pic)

Direct Orange F3R( S A des Ets. Steiner )

Pyrazol Orange RS( Clariant GmbH )