MPG

Propylene glycol (PG) Properties and Applications: It is a colorless liquid with steady viscosity and good water absorption. It is nearly odorless, inflammable and minutely toxic. Its viscosity (20°C°), specific heat capacity (20°C) 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. Colourity (Pt-Co) No., max 10 PG content %, min 99.5 Relative density d2020 1.037-1.039 Index of refraction 1.430-1.434 Moisture %, max 0.2 Alkalinity (as OH) mmol/100g, max 0.04 Distillation range (IBP-DP) °C 184-189 Burning Residues %, max 0.010 Sulfate (Na2SO4) ppm, max 13 Cl ppm, max 1 As ppm, max 5 Pb ppm, max 5 Fe ppm, max 0.3