Propylene glycol 

 Model superior grade product grade superior grade 
 Content ≥ 99.6 (%) manufacturers (Origin) 
 Product Name propylene glycol density of 1.0381 (g/cm3) 
 Implementation of quality standards GB packaging specifications 215KG / barrel 
 CAS 57-55-6 
 First, the physical and chemical properties Appearance: colorless viscous absorbent liquid, almost odorless. Boiling point: 188.2 ℃ Melting point: -59 ℃ viscosity: (20 ° C) 60.5mpa.s, relative density (water = 1): 1.04 Vapor Pressure: 20 ℃ when 106Pa Flash point: 99 ° C (closed cup), 107 ℃ (open cup), specific heat capacity (20 ° C) 2.49kJ / (kg. ℃), heat of vaporization (101.3kpa) 711kJ/kg. Natural temperature: 421.1 ° C Solubility: water, ethanol and various organic solvents miscible. Purposes: propylene glycol unsaturated polyester, epoxy resin, polyurethane resin, the raw material, the amount of about 45% of the propylene glycol consumption, this unsaturated polyester is used extensively for surface coating and reinforced plastic. The propanediol sticky and hygroscopic and non-toxic, and thus widely used in food, pharmaceutical and cosmetic industry, hygroscopic agent, antifreeze, lubricants and solvents. Generate propylene glycol fatty acid esters, propylene glycol and fatty acid in the food industry, mainly as a food emulsifier; propylene glycol is an excellent solvent for spices and pigments. Propylene glycol commonly used in the pharmaceutical industry for the manufacture of various types of ointment, ointment solvent, softener, and excipients such as propylene glycol has good miscibility with all kinds of spices, and thus used as a cosmetic solvents and softeners. Propylene glycol is also used as a tobacco humidifier agents, preservatives, food processing equipment, lubricants and food marking ink solvents. Aqueous solution of propylene glycol is effective antifreeze.