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Pigment Yellow 5

Catalog Number DYE-PIG-0624
CAS Number 4106-67-6
Structure
Synonyms Fast Yellow 5G, Pigment Yellow 5G, Yellow 5G
Molecular Weight 326.31
Molecular Formula C16H14N4O4
Melting Point 206 ℃.
Appearance Green light yellow powder
CI Number C.I.11660
Color brilliant green yellow.
Lightfastness Good
Main Molecular Structure Single azo
Oleic Acid 4
Preparation Method 2-Nitrobenzenamine diazotization, and 3-Oxo-N-phenylbutanamide coupling.
Properties Soluble in ethanol, acetone and benzene. In concentrated sulfuric acid for light yellow, dilution after light yellow precipitation; In 10% of sodium hydroxide solution for deep yellow. Bright color, light fastness medium, the solvent resistance and heat resistance is poor. Mainly used in coating, printing ink, rubber, plastic and cultural and educational supplies coloring.
Soap Micelle Bleeding 4

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