Propylene Glycol
Formula:C3H8O2 Composition strcture: It is a colorless liquid with steady viscosity and good water absorption. It is nearly odorless, inflammable and minutely toxic. Its viscosity (20C), specific heat capacity (20C) and latent heat of vaporization (101.3kpa) are respectively 60.5mpa.s, 2.49KJ/(kg. C) and 711KJ/kg. It can be mixed and solved with alcohol, water and various organic agents. PG is the raw material for preparing unsaturated polyester resin, plasticizer, surface active agent, emulsifying agent and demulsifying agent. It can also be used as mould inhibitor, antiseptic for fruit, ice inhibitor and moisture preserving agent for tobacco. Specification Industrial Standard Medical Standard Appearance Colorless,transpharent, Viscose, Colorless,transpharent, viscose, liquid Colourity (Hazen) ;10 ;6 Distillation range(IBP-DP)C 182-190 186-189 Relative density d2020 1.036-1.040 1.036-1.040 Moisture ppm ;1300 ;800 Acidity (as KOH) MgKOH/g ;0.08;0.05 Ash % ;0.01 ;0.01 Heavy metal (as Pb) ppm - ;6 Arsenic (as As2O3) - ;3 Chloride (as NaCl) % - 0.0008 Sulphate (as Na2SO4) % - 0.0008 3.Package, Storage and Transportation It should be packed in galvanized iron drums with the net weight of 200kg/drum. It must be stored in a cool and well-ventilated place. It must be dealt with in the same way as inflammable chemical products