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Pigment Yellow 4

Catalog Number DYE-PIG-0625
CAS Number 1657-16-5
Structure
Synonyms Eljon Yellow 5G, lexiverse Yellow 4
Molecular Weight 326.31
Molecular Formula C16H14N4O4
Melting Point 217 ℃.
Appearance Yellow powder. After staining for green yellow.
CI Number C.I.11665
Color brilliant green yellow.
Lightfastness Good
Main Molecular Structure Single azo
Oleic Acid Well
Preparation Method 4-Nitrobenzenamine diazotization, and 3-Oxo-N-phenylbutanamide coupling.
Properties Insoluble in water and concentrated hydrochloric acid, soluble in ethanol, acetone and benzene. In concentrated sulfuric acid to green light yellow, dilution after green yellow precipitation; In the potassium hydroxide alcohol solution for red; In 5% sodium hydroxide solution color burn to orange. Mainly used in printing ink, sometimes also used in paints, rubber and coating printing paste color. The alkali resistance is poor, the heat treatment is very sensitive.
Soap Micelle Bleeding Slightly

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