The nature of propylene glycol

Posted: October 23, 2012 in Cosmetic raw materials
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Propylene glycol as an absorptive achromatic adhesive liquid, about odorless, flammable, low toxicity. With water, booze and added amoebic solvents. Boiling point 187.3 ℃. Melting point -60 ℃. The about body of 1.0381 (20/20 ℃). Refractive basis nD (20 ℃) ​​1.4326. Apparent astriction (20 ℃) ​​38mN / m. Viscosity (20 ° C) 60.5mPa s. Specific calefaction accommodation (20 ° C) 2.49kJ / (kg · ° C). The dehydration hot (101.3 kPa) 711kJ/kg. 1824.0kJ/mol afire hot (25 ° C). Flash point (open cup) 99 ° C. Spontaneous agitation point 415.5 ℃. The analytical temperature of 352 ° C. Analytical burden of 6.1MPa. Product uses glycol can be acclimated as an unsaturated polyester adhesive materials, but aswell the raw actual of plasticizer, apparent alive agents, emulsifiers, and demulsifiers. Can be acclimated as a fungicide, bake-apple ripening agents, preservatives, antifreeze and tobacco humectant.

Propylene glycol is unsaturated polyester, adhesive resin, polyurethane resin, an important raw material, the bulk accounted for about 45% of the absolute burning of propylene glycol, unsaturated polyester is acclimated abundantly for apparent coatings and able plastics. Tackiness and hygroscopicity of the propylene glycol, and a non-toxic, and appropriately in the food, biologic and corrective industry, broadly acclimated as an absorptive agent, antifreeze agent, a adipose and a solvent.

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From: Natural cosmetic ingredients

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