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Direct Yellow 25

Name:C.I.Direct Yellow 25,C.I.21510

Molecular Structure: Double azo class

C.I.Direct Yellow 25,C.I.21510,CAS 6441-67-4,552.46,C19H17N10NaO7S,Toluylene Yellow G,Liquid Brown 7R

C.I.Direct Yellow 25,C.I.21510,CAS 6441-67-4,552.46,C19H17N10NaO7S,Toluylene Yellow G,Liquid Brown 7R

Molecular Formula:C19H17N10NaO7S

Molecular Weight: 552.46

CAS Registry Number:6441-67-4

Manufacturing Methods : 3,5-Diamino-4-methylbenzenesulfonic acid double nitriding,and 4-Nitrobenzene-1,3-diamine (2 Moore) coupled.

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

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

List of Suppliers:

ECO Liquid Brown 7R( Clariant GmbH )

Sodyesul Liquid Brown 7R( Clariant GmbH )

Toluylene Yellow G( Bayer Group )


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