Pigment Orange 18
Name:C.I.Pigment Orange 18,C.I.15970:1
Molecular Structure: Single azo
C.I.Pigment Orange 18,C.I.15970:1,CAS 1325-14-0,328.34,C16H12N2O4S
Molecular Formula:C16H12N2O4S
Molecular Weight: 328.34
CAS Registry Number:1325-14-0
Manufacturing Methods : aniline diazotization, and 6-Hydroxynaphthalene-2-sulfonic acid coupling, and then into calcium salt lake.
Properties and Applications:brilliant red light orange. Slightly soluble in ethanol for golden orange, soluble in acetone and Cellosole, insoluble in other organic solvent. In concentrated sulfuric acid for golden orange, orange after diluted for gold; In concentrated nitric acid for brown solution, and then into the red. Pigment aqueous solution with concentrated hydrochloric acid for golden orange; Join concentrated sodium hydroxide solution for brown light orange.
| Light Fastness | Heat resistance(℃ ) | Sodium carbonate(5%) | Muriatic acid(5%) | Oleic acid | PVC migration | Soap micelle bleeding | |
| Melting point | Stable | ||||||
| General | General(More than 120 dark) | Good | Well | Well | Slightly | ||
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