Application and parameters of Solvent Brown 12
| Density(g/cm3) | 1.70 | 
| Melting Point(°C) | 170 | 
| Light Fastness | 4-6 | 
| Heat resistance | 200 | 
| Acetone | - | 
| Butyl Acetate | 20 | 
| Methylbenzene | 10 | 
| Dichloromethane | 30 | 
| Ethylalcohol | 4.0 | 
melting point 130-135 ^ 0, soluble in ethanol and acetone, insoluble in water. Same chemical structure as C.I. Basic Brown 4 and c.i.segment Brown 3
| Item | Fastness | |
| Sun | commonly | |
| Heat-resisting | melting point(℃) | 135 | 
| Stable to(℃) | >155 | |
| Water resistance | Good | |
| sodium carbonate(5%) | unchanged | |
| hydrochloric acid (5%) | Poor | |
Preparation method: treat 3 moles of 2,4 - ~ aminotoluene hydrochloride with 2 moles of nitrous acid (the product may be a mixture with the above-mentioned diazo dye as the main component).
References: Pb 25625, 62-70; 881-2; Pb 74027, 586
FIAT 764—Vesuvin BL neu
Ber.,11(1878),627
Fierz-David&Blangey,282
English trade name:
Bismarck Brown Base(PYL)
Bismarck Brown R Base(PSC)
Bismarck Brown R Base(PYL)
Bismark Brown R(DSI)
Bismark Brown R Base(GCI)
Simpsol Bismark R 24799( WSS)
used for coloring of grease, paraffin, cellulose,synthetic resin paint.

20 or 25kg/compound bag, carton box, iron drum, fiber durm for powder dye and 1000kg/tank for liquid dye