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Direct Red 144

Name:C.I.Direct Red 144,C.I.17830

Molecular Structure: Single azo class

C.I.Direct Red 144,C.I.17830,CAS 6492-66-6,713.63,C33H25N5Na2O9S

C.I.Direct Red 144,C.I.17830,CAS 6492-66-6,713.63,C33H25N5Na2O9S

Molecular Formula:C33H25N5Na2O9S

Molecular Weight: 713.63

CAS Registry Number:6492-66-6

Manufacturing Methods :  3-Methyl-4-amino-3-carboxy-4′-hydroxybenzanilide diazo, and 7-(4-Amino-3-methylbenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: red. Slightly soluble in water and red to blue light for Claret, soluble in ethanol for red orange. The strong sulfuric acid to red light purple, diluted red for quality. The dye solution with strong hydrochloric acid have Red sauce precipitation; Add thick sodium hydroxide solution for product red.

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

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