specifications: 1) common name : pyridine 2) CAS NO: 110-86-1 3) appearance : colourless liquid with a very unpleasant odour. Melting point: -42C Boiling point: 115 C vapour density : 2.7 ( air =1) vapour pressure : 16mmHG at 20C Flash point : 19C ( closed cup) Explosion limits : 1.8% -12.4%