Food Orange 3
Name:C.I.Food Orange 3,C.I.11920
Molecular Structure: Single azo class
C.I.Food Orange 3,C.I.11920,CAS 2051-85-6,214.22,C12H10N2O2
Molecular Formula:C12H10N2O2
Molecular Weight: 214.22
CAS Registry Number:2051-85-6
Manufacturing Methods : aniline diazo, Coupled with resorcinol.
Properties and Applications: bright orange. Yellow orange powder, melting point: 150 ~ 170 ℃ (usually products do not pure). Soluble in ethanol and aether (yellow), in the ethanol solubility of 0.2 ~ 0.3 g / 100ml, slightly soluble in water, but soluble in vegetable oil. The strong sulfuric acid to red light brown, for yellow brown solution diluted, and then into a dark orange precipitation; In 2% of sodium hydroxide solution (heating) for orange brown solution. Its water solution and strong hydrochloric acid color the darker, and then generate a shallow brown precipitation. Sun of resistance, alkali resistance is bad. And C.I.Solvent Orange 1 the same chemical structure.
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