Propylene Glycol
Name: Propylene Glycol
Synonyms:1,2-Propanediol,Propane-1,2-diol,PG
Formula: C3H8O2
Structural formula:
Propylene Glycol Property:
Propylene glycol is a colorless liquid with steady viscosity and good water absorption. Propylene glycol PG 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. Propylene glycol liquid can be mixed and solved with alcohol, water and various organic agents.
Propylene glycol Uses:
Propane-1,2-diol is the raw material for preparing unsaturated polyester resin, plasticizer, surface active agent, emulsifying agent and demulsifying agent. Propylene glycol food grade can also be used as mould inhibitor, antiseptic for fruit, ice inhibitor and moisture preserving agent for tobacco.
Specifications (It conforms to the Quality System Standard: ISO9001: 2000):
Index |
Propylene glycol 99.5% |
Propylene glycol 99% |
|
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, | |
Packing, Storage and Transportation:
1,2-Propanediol can be packed by ISO tank, galvanized iron drum, plastic drum, IBC or flexitank, etc.
Propylene Glycol should be stored in cool and windy special warehouse far from fire and transported as a general chemical product.
Noted: Not to be confused with propylene carbonate.