200 gms nitromethane, 300 gms 28% HCl and 300 gms Glacial Acetic Acid were mixed and slowly heated to just below reflux and temp held there for about 4 hours then temp adjusted for relux and left for 12 hours. Left to cool for 8 hours. Crystals formed. Liquid was decanted and reduced to about 200 mls and put in freezer overnight. More crystals were recovered. Total yield 100 gms. Crystals became yellowish on standing.