Synonym: 1,2-Propanediol
Molecular formula: C3H8O2
Structure:
Property: It is a colorless liquid with steady viscosity and good water absorption. It is nearly odorless,
inflammable and minutely toxic. Its viscosity (20°C°), specific heat capacity (20°C) and
latent heat of vaporization (101.3kpa) are respectively 60.5mpa.s, 2.49KJ/(kg. °C) and 711KJ/kg.
It can be mixed and solved with alcohol, water and various organic agents.
Application: 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 for tobacco.
Specification:
|
Items
|
Units
|
Pharmaceutical Grade
|
First Grade
|
|
Purity
|
%
|
≥99.8%
|
|
|
Water
|
%
|
≤0.2
|
——
|
|
Initial boiling point
|
℃
|
182
|
——
|
|
Drying point
|
℃
|
189
|
——
|
|
Distillation Range
|
℃
|
184~189
|
183~190
|
|
Color(Pt-Co)
|
——
|
10
|
15
|
|
Ash
|
%
|
≤0.01
|
≤0.01
|
|
Heavy Metal（Measured with Pb）
|
ppm
|
6
|
——
|
|
Arsenic
|
ppm
|
5
|
——
|
|
Chlorides
（Measured with Cl-）
|
ppm
|
10
|
——
|
|
Sulphates(Measured with SO42-)
|
ppm
|
10
|
——
|
|
Density
|
(25℃)g/cm3
|
1.037~1.039
|
|
|
Appearance
|
Colorless, transparent and sticky liquid
|