Propylene glycol is a mixture of three isomeric chemical compounds, 4-oxa-2, 6-heptandiol, 2-(2- hydroxy-propoxy)-propan-1-ol, and 2-(2-hydroxy-1-methyl-ethoxy)-propan-1-ol. It is a colorless, nearly odorless liquid with a high boiling point and low toxicity.
| Appearance | Clear Viscous Liquid |
| Moisture | 0.12 %w/w |
| MPG | 0.40 %w/w |
| DPG | 99.60 %w/w |
| TPG + Residue | NT |
| Odor | Pass |
| Color | 10 APHA |
| Iron (Fe) | NT |
· Propylene glycol finds many uses as a plasticizer, an intermediate in industrial chemical reactions, as a polymerization initiator or monomer, and as a solvent.
· Its low toxicity and solvent properties make it an ideal additive for perfumes and skin and hair care products.
· It is also a common ingredient in commercial fog fluid, used in entertainment industry fog machines.
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