Propylene Glycol (PG)
Solvent CAS 57-55-6
Practically odorless and used as a diluent rather than as an odorant.
Odor profile
| Odor Impact1 | 5 |
| Tenacity1 | 10 h |
1 Source: PerfumersWorld
Identification
| CAS Number | 57-55-6 |
| INCI Name | Propylene Glycol |
| Category | Solvent |
| Formula | C3H8O2 |
| Mol. Weight | 76.09 |
| IUPAC Name | propane-1,2-diol |
| InChIKey | DNIAPMSPPWPWGF-UHFFFAOYSA-N |
Synonyms
propane-1,2-diol, 2-propanediol, monopropylene glycol, methylethylene glycol, isopropylene glycol, propylene glycol USP, PG
Physical and chemical data
| Boiling Point | 187.60 °C |
| Melting Point | -60.00 °C |
| Flash Point | 99.00 °C |
| Density | 1.03610 |
| Refractive Index | 1.43240 |
| Vapor Pressure | 0.130000 mmHg @ 25.00 C. |
| LogP | -0.92 |
| Solubility | miscible with water; soluble in ethanol and acetone |
| Appearance | clear colorless viscous hygroscopic liquid |
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.