Propylene glycol/PG is an important raw material of unsaturated polyester, epoxy resin and polyurethane resin.
| Item | Specification | Inspection methods | Result |
| Appearance |
Colorless and
transparent, viscous liquid without sediment and suspended matter |
Visual inspection |
Colorless and
transparent, viscous liquid without sediment and suspended matter |
|
Pg content wt%≥
|
≥99.5
|
GB 29216-2012
|
99.8
|
|
Initial melting point,ºC
|
≥185
|
GB/T 7534-2004
|
185
|
|
Dry point,ºC
|
≥189
|
GB/T 7534-2004
|
185
|
|
Relative density(25ºC,25ºC)
|
1.0350-1.0370
|
GB/T 4472-2011
|
1.0371
|
|
Moisture,w,%
|
≤0.20
|
GB/T 6283-2008
|
0.08
|
|
Acid content(Consumption of lye),ml
|
≤1.67
|
GB 29216-2012
|
0.44
|
|
Burning residue,%
|
≤0.007
|
GB 29216-2012
|
0.0007
|
|
Lead (Pb)
|
≤1
|
GB 5009.12-2017
|
0.0016
|
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