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Propylene Glycol

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Formula: C3H8O2
Structural formula:
It is a colorless liquid with steady viscosity and good water absorption. It is nearly odorless, uninflammable and minutely toxic. Its molecular mass is 76.09. Its viscosity (20oC), specific heat capacity (20oC) and latent heat of vaporization (101.3kpa) are respectively 60.5mpa.s, 2.49KJ/(kg. oC) 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 f.
Specifications (It conforms to the Quality System Standard: ISO9001: 2000):
Index
High Grade
Technical Grade
PG content % ≥
99.5
99.0
Moisture % ≤
0.10
0.20
Color (Pt-Co) No. ≤
10
16
Relative density d2020 g/cm3
1.035~1.038
1.035~1.040
Index of refraction(nd20)
1.431-1.435
1.428-1.435
Acidity(as acetic acid), % ≤
0.01
0.02
Distillation range(IBP-DP) oC
184~190
183~190
Appearance
Colorless, viscous and transparent liquid,
no mechanical impurity
Packing, Storage and Transportation:
It can be packed by ISO tank, galvanized iron drum, plastic drum, IBC or flexitank, etc.
This product should be stored in cool and windy special warehouse far from fire and transported as a general chemical product.

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