Properties Specifications Color when shipped (APHA) 50 Max. Specific gravity (g/ml 25 ºC) 0.97 0.99 Acidity (As Methacrlic acid) % 0.1 Max. Purity % - Gaschromatography 98.5 Min. Water when shipped (By Karl Fisher) % 0.1 Max. Inhibitors - MEHQ ppm 100 Package & Net weight 25kgs or 200kgs net drum Formula weight 222 Refractive index (n²°D, 30ºC)) 1.475 Viscosity (CPs,25ºC) 9-15 Flash point ºC 119 (Close cup) Tg of Polymer 170