Characteristics instructions：
|
Items.
|
Tech grade
|
First grade
|
|
Purity
|
99.5% min.
|
99.8% min.
|
|
Color
|
10 max.
|
10 max.
|
|
Density(25°C)
|
1.037-1.039g/cm3
|
1.037-1.039g/cm3
|
|
Refractive index(25°C)
|
1.431-1.435
|
1.431-1.435
|
|
Boiling point
|
180-190 °C
|
185-188°C
|
|
Water
|
0.05% max.
|
0.03% max.
|
|
Alkalinity
|
0.002wt% max.
|
0.002wt% max.
|
|
Cl
|
0.007wt% max.
|
0.007wt% max.
|
|
Heavy metal(as Pb)
|
5PPM max.
|
5PPM max.
|
Application:
Propylene glycol can be used as raw material for unsaturated
polyester resin. In cosmetics, toothpastesoap can be used with glycerol or
sorbitol with a wetting agent. Used in hair dyes humidity, uniform hair agent,
also used as an antifreeze, is also used cellophane, plasticizers and
pharmaceutical industries.
Packaging:
220kg/drum
