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- Details for Acid Yellow 49
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Acid Yellow 49 12239-15-5
Category : Dyestuffs and Pigments/Acid Dyes
CAS NO : 12239-15-5 EC NO : 235-473-4 MF : C16H13Cl2N5O3S MW : 426.2771 Product description : Name:C.I.Acid Yellow 49,C.I.18640
Molecular Structure: Single azo class
C.I.Acid Yellow 49,C.I.18640,CAS 12239-15-5,448.26,C16H12Cl2N5NaO3S,Weak acid Yellow GR,Weak acid Yellow NFC,Weak acid Yellow E-4G,Acid Yellow GR
Molecular Formula:C16H12Cl2N5NaO3S
Molecular Weight: 448.26
CAS Registry Number:12239-15-5
Properties and Applications: brilliant yellow. This applies to goods wool, silk, polyamide fiber and wool blended fabric dyeing, good levelness and also can be used for leather color.
Standard
Light Fastness
Soaping
Persperation Fastness
Oxygen bleaching
Fastness to seawater
Fading
Stain
Fading
Stain
Fading
Stain
ISO
5-6
2-3
3
3
3
3-4
3
2-3
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Synonyms : C.I. Acid Yellow 49;Benzenesulfonic acid, 4-(2-(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)diazenyl)-2,5-dichloro-2,5-dichloro-4-{(2Z)-2-[(5Z)-5-imino-3-methyl-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene]hydrazino}benzenesulfonic acid;4-(5-amino-3-methyl-1-phenyl-pyrazol-4-yl)azo-2,5-dichloro-benzenesulfonic acid; Molecular Structure : 
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Acid Yellow 49