Product: Phenyl J Acid
Chemical name: 4-Hydroxy-7-(Phenylamino)-2-Naphthalenesulfonic Acid
CAS NO: 119-40-4
Molecular formula: C16H13NO4S
Structure formula:
Properties:
Grey or white powder. Slightly soluble in water, ethanol and dilute acid, also soluble in alkali solution.
Application:
Mainly used to dyestuff intermediates, complexing azo dyestuff, direct green BTL, direct blue FBGL and direct violet BBL and etc.
Specification:
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Items
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Quality
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Quality
|
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Coupling Value,%
|
93 min.
|
90 min.
|
|
Insoluble matter,%
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0.1 max.
|
0.15 max.
|
|
Free J Acid,%
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0.5 max.
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1 max.
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|
Free Aniline,%
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0.2 max.
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0.4 max.
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|
Bis J Acid,%
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0.8 max.
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2 max.
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|
