| 
 | 
| HYDROXY NAPHTHOL BLUE | 
| SPECIFICATION SHEET | 
| PRODUCT | HYDROXY NAPHTHOL BLUE | |
| CAS NO | 63451-35-4 | |
| TESTS | RESULTS | (Limit/STD) | 
| Solubility 0.1%(water) | Clear wine red solution | (Passes test) | 
| Absorptivity (1% 1cm,at l max, | ||
| in ammonia buffer pH 12.0+2ml | ||
| 0.05 M.E.T.D.A.) 648.Onm | 427 | (350-500) | 
| Loss on drying at 105OC (1hr.) | 3.57% | (<5%) |