| Formula / Notation | C3H8O2 |
|---|---|
| CAS Number | 57-55-6 |
| Molecular Weight | 76.09 |
| Melting Point | -76 °F (NTP, 1992) |
| Boiling Point | 370.8 °F at 760 mmHg (NTP, 1992) |
| Density | 1.04 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | greater than or equal to 100 mg/mL at 70 °F (NTP, 1992) |
| Appearance | Thick odorless colorless liquid. Mixes with water. (USCG, 1999) |
| Also Known As | propane-1,2-diol; 1,2-propanediol; 57-55-6; 1,2-Propylene glycol; 1,2-dihydroxypropane; 2-Hydroxypropanol; Isopropylene glycol; Dowfrost; Sirlene; Methylethyl glycol |
| Category | Organic Compounds |
What is Propylene glycol?
Propane-1,2-diol is the simplest member of the class of propane-1,2-diols, consisting of propane in which a hydrogen at position 1 and a hydrogen at position 2 are substituted by hydroxy groups. A colourless, viscous, hygroscopic, low-melting (59C) and high-boiling (188C) liquid with low toxicity, it is used as a solvent, emulsifying agent, and antifreeze. It has a role as a protic solvent, an allergen, a mouse metabolite and a human xenobiotic metabolite. It is a glycol and a member of propane-1,2-diols.
Formula & Notation
IUPAC Name: propane-1,2-diol
Other Names / Synonyms: propane-1,2-diol; 1,2-propanediol; 57-55-6; 1,2-Propylene glycol; 1,2-dihydroxypropane; 2-Hydroxypropanol; Isopropylene glycol; Dowfrost; Sirlene; Methylethyl glycol
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | -76 °F (NTP, 1992) |
| Boiling Point | 370.8 °F at 760 mmHg (NTP, 1992) |
| Density | 1.04 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Molecular Weight | 76.09 |
| Solubility | greater than or equal to 100 mg/mL at 70 °F (NTP, 1992) |
| Appearance | Thick odorless colorless liquid. Mixes with water. (USCG, 1999) |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Propane-1,2-diol is the simplest member of the class of propane-1,2-diols, consisting of propane in which a hydrogen at position 1 and a hydrogen at position 2 are substituted by hydroxy groups. A colourless, viscous, hygroscopic, low-melting (59C) and high-boiling (188C) liquid with low toxicity, it is used as a solvent, emulsifying agent, and antifreeze. It has a role as a protic solvent, an allergen, a mouse metabolite and a human xenobiotic metabolite. It is a glycol and a member of propane-1,2-diols.
Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.
Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.
The formula or notation for Propylene glycol is: C3H8O2