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Direct Brown 7

Name:C.I.Direct Brown 7,C.I.30035

Molecular Structure: trisazo class

C.I.Direct Brown 7,C.I.30035,744.71,C31H26N10Na2O6S2,Paradiazol Brown N

C.I.Direct Brown 7,C.I.30035,744.71,C31H26N10Na2O6S2,Paradiazol Brown N

Molecular Formula:C31H26N10Na2O6S2

Molecular Weight: 744.71

CAS Registry Number:

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and 2,4-Diamino-5-methylbenzenesulfonic acid coupling, and then and 4-Aminobenzenesulfonic acid diazo, and Benzene-1,3-diamine coupled to accidentally coupled nitrogen compounds.

Properties and Applications: brown. Soluble in water for orange brown, soluble in ethanol is palm yellow light. The strong sulfuric acid for sauce red to red light brown, for yellow brown after diluted. The dye solution to join strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 1 4 2 3 2

List of Suppliers:

Paradiazol Brown N( Francolor Pigments SA )


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