Extra-dry pyridine containing less than 0.01% water.
| M | 79.10 |
|---|---|
| D | 0.98 |
| b.p | 115-116 °C |
| m.p | -42 °C |


| Color (APHA Pt-Co) | <= 10 |
| Assay (GC on anhydrous basis) | >= 99.8% |
| Residue after evaporation | <= 0.001%w/w |
| Subs. reducing KMnO4 | Complying |
| Water (KF) | <= 0.01%w/w |