Molecular formula: C24H20N4O
molecular weight: 380.45
temperature: 188 ° C
traits: dark red powder.
solution: do not dissolve in water, ethanol-soluble, benzene and acetone, dissolved in chloroform (ml soluble 1g), oil, grease, wax, phenol.
purposes: to paint, shoe polish, plastics, oil, soap, candles, etc. coloring. Preparation or
Source: o-toluidine as raw materials in hydrochloric acid solution with sodium nitrite to diazotization reaction of diazonium salt, coupled with o-toluidine, Generation (single) azo compounds, and then diazotization, Generation (single) azo diazonium salt, alkali solution in the final and β - naphthol coupling can be obtained.
Note: softening point of 175 ° C and 290 ° C, completely decomposed. Heat resistance, acid and alkali resistance of the fine.
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