Pigment Red 50:2
Name:C.I.Pigment Red 50:2,C.I.15500:2
Molecular Structure: Single azo
C.I.Pigment Red 50:2,C.I.15500:2,CAS 6373-04-2,292.29,C17H12N2O3
Molecular Formula:C17H12N2O3
Molecular Weight: 292.29
CAS Registry Number:6373-04-2
Manufacturing Methods :2-Aminobenzoic acid diazotization, and Naphthalen-2-ol coupling, and then into calcium salt
Properties and Applications:red light orange, shallow blue light pink. Slightly soluble in water (orange) and ethanol. Melting point 176 ℃ (from the glacial acetic acid crystal). In concentrated sulfuric acid in scarlet, dilution have orange precipitation. Pigment solution to join hydrochloric acid have orange precipitation; Add sodium hydroxide into darker orange.
| Light Fastness | Heat resistance(℃ ) | Sodium carbonate(5%) | Muriatic acid(5%) | Oleic acid | PVC migration | Soap micelle bleeding | |
| Melting point | Stable | ||||||
| 176 | Stable (to 120) | ||||||
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