| Product No. | Product name | specifications | 
| 1.17595.010 | 1-(2-Pyridylazo)-2-naphthol | AR5g | 
| Item | AR | 
| Effective spectrophotometric determination | ≤90% | 
| Sensitivity to copper | Pass | 
| Melting point,℃ | 138~142 | 
| Solubility in ethanol | Pass | 
| Residue on ignition(as SO4) | ≤0.1% | 




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