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| PYROCATECHOL VIOLET | 
| SPECIFICATION SHEET | 
| C.A.S. No. | 115-41-3 | 
| M.F. | C19H14O2S | 
| M.W. | 386.38gm/mole | 
| Specifications: | |
| Solubility 0.1% (MeOH) | Clear solution | 
| Absorption maximum(in MeOH) ?max | 442-446nm | 
| Absorptivity 1%, 1cm (in MeOH)at ?max | >360 | 
| Loss on drying (110°C) | <7% |