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Direct Orange 74

Name:C.I.Direct Orange 74,C.I.28255

Molecular Structure: Double azo class

C.I.Direct Orange 74,C.I.28255,CAS 6104-56-9,975,87,C41H28N7Na3O12S3,Pontamine Diazo Orange 2R

C.I.Direct Orange 74,C.I.28255,CAS 6104-56-9,975,87,C41H28N7Na3O12S3,Pontamine Diazo Orange 2R

Molecular Formula:C41H28N7Na3O12S3

Molecular Weight: 975,87

CAS Registry Number:6104-56-9

Manufacturing Methods : 7-Aminonaphthalene-1,3-disulfonic acid diazo, and a coupling m-Toluidine condensation, and then will the nitro reductive into amino, its product to diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: red light orange. Soluble in water for orange brown, slightly soluble in ethanol is palm light orange. The strong sulfuric acid for blue-ray in red, for orange brown after diluted. The dye solution to join strong hydrochloric acid have dark brown precipitation; Add thick nitrogen oxidation sodium solution have orange brown precipitation. Used for cellulose fiber dyeing, Exhaust dyeing and levelness are good.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 4-5 3 4 3-4 5

List of Suppliers:

Pontamine Diazo Orange 2R( Classic Dyestuffs Inc )


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