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CAS number：3520-72-7
molecular formula：C32H24Cl2N8O2
molecular weight：623.49
EINECS number：222-530-3
calcotoneoranger;carnelioorangeg;dainichifastorangerr;daltolitefastorangeg;diarylideorange;eljonfastorangeg;fastbenzideneorangeyb3;fastonaorangeg
Pigments;Organic Pigments;Chemical Materials;Organics;Dyes and Pigments
| Boiling point | 825.5±65.0 °C(Predicted) |
| Density | 1.5522 (rough estimate) |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive index | 1.6100 (estimate) |
| Storage conditions | Room Temperature, under inert atmosphere |
| Color index | 21110 |
| Shape | Solid |
| Acidity coefficient(pKa) | 1.55±0.70(Predicted) |
| Color | Orange to Dark Orange |
LogP | 1.17 at 24℃ and pH7 |
| CAS database | 3520-72-7(CAS DataBase Reference) |
Yellow-orange powder. not soluble in water. The body is light, soft and delicate, with strong tinting strength and good fastness.
● rubber industry.
● Used for coloring ink, plastic, rubber, pigment printing paste and stationery
● The 3,3'-dichlorobenzidine is diazotized with nitrous acid and then coupled with 1-phenyl-3-methyl-5-pyrazolone.
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