Solvent Black 4
Name:C.I.Solvent Black 4,C.I.26040
Molecular Structure: Double azo class
Molecular Formula:C28H23N5
Molecular Weight: 429.53
CAS Registry Number:6368-71-4
Manufacturing Methods :aniline diazotization, and Naphthalen-1-amine coupling, and its product to diazotization, and N-Ethylnaphthalen-1-amine coupling.
Properties and Applications:red light black. Insoluble in water, soluble in ethanol, acetone and water. In concentrated sulfuric acid for yellow chestnut, after dilution for green yellow.
| Standard | Light Fastness | Heat-resistant(℃) | water | Sodium Carbonate(5%) | Hydrochloric acid(5%) | |
| Melting point | Stable | |||||
| ISO | Good | Insoluble | ||||
List of Suppliers:
Organol Black R(Francolor Pigments SA)


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