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Purity 99.6% min propylene glycol / CAS: 57-55-6
I Introduction of Propylene Glycol
CAS: 57-55-6
Category standard: Technical quality and pharmaceutical quality
PG Content: 99.7% Min
Appearance: Colorless, viscous and transparent liquid
Specification of Propylene Glycol
Articles | Unit | Specification | Results |
Dosage | GLC% | 99.5 mins | 99.9 |
Humidity | % In weight | 0.2max | 0.065 |
Specific severity | (25/25 ℃) | 1.0360-1.0370 | 1.0365 |
Refractive index | 25 ℃ | 1.4307-1.4317 | 1,431 |
Distillation range | (L), ℃ | 184.0-189.0 | 184 |
Distillation range | (U), ℃ | 184.0-189.0 | 189 |
Volume distillation | Flight % | 95 mins | 97.2 |
Acidity | Ppm | 50max | 40 |
Weight Chloride | % | 0.007max | <0.007 |
Sulfate | 0.006max | 0.006max | <0.006 |
Heavy metals | Weight ppm | 5max | <5 |
Residue on ignition | % In weight | 0.07max | 0.05 |
Volatile organic chloroform impurities (μg / g) | ---- | 60max | Not detected |
Organic impurity Volatile 1.4 dioxane (μg / g) | ---- | 380max | Not detected |
Methylene chloride (μg / g) | ---- | 600max | Not detected |
Application of propylene Glycol:
Propylene glycol (PG C3H8O2) is a colorless liquid with constant viscosity and good water absorption. it is almost odorless, non-flammable and almost non-toxic. It can be mixed and resolved with alcohol, water and various organic agents.
Propylene glycol is the raw material for unsaturated polyester resin, plasticizer, surface active agent, emulsifier and demulsifier. it can also be used as a mold inhibitor, an antiseptic for fruit, an ice inhibitor and a moisture preservative for tobacco.
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