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HomeProduct name listSolvent Orange 56

Solvent Orange 56

What is Solvent Orange 56?

Preparation

C.I. Solvent Orange 5 (by 3-Amino-2-hydroxy-5-nitrobenzenesulfonic acid diazotization, with 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling and then in the 130 ℃ in Chromium formate in aqueous solution, heating 3 hours, make it into Chromium complex and) into metal complex.

Properties and Applications

orange. Soluble in ethanol, slightly soluble in Cellosolve. In concentrated sulfuric acid to dark yellow, diluted into orange; In 10% sodium hydroxide solution for orange.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Well 180 Well

Safety information for Solvent Orange 56

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