| Product No. | Product name | specifications | 
| 1.21102.023 | Pyridine | AR500mL | 
| 1.21102.033 | Pyridine | AR2.5L | 
| Item | AR | CP | 
| Assay (C5H4N) | ≥99.5% | ≥99.0% | 
| Solubility in water | Pass | Pass | 
| Evaporation residue | ≤0.002% | ≤0.004% | 
| Water(H2O) | ≤0.1% | ≤0.2% | 
| Chloride(Cl) | ≤0.0005% | ≤0.001% | 
| Sulfate(SO4) | ≤0.001% | ≤0.002% | 
| Ammonia(NH3) | ≤0.002% | ≤0.004% | 
| Copper(Cu) | Pass | Pass | 
| Substances reducing potassium permanganate Pass Pass | 
IATA-DGR UN 1282 PYRIDINE,3,II




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