Substance profile
1-Methoxy-2-propanol
1-Methoxy-2-propanol is a colorless liquid with a weak pleasant odor.
01 · Identification
What 1-Methoxy-2-propanol is
1-Methoxy-2-propanol is a colorless liquid with a weak pleasant odor. Its molecular formula is C4H10O2 and its molecular weight is 90.12 g/mol. It boils at 120 °C, melts at -95 °C.
Under the GHS it carries the signal word Warning. It is classed as flammable agents - 3rd degree.
Other names for 1-Methoxy-2-propanol
- monopropylene glycol methyl ether
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
03 · Physical and chemical properties
1-Methoxy-2-propanol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 120 °C (248 °F) | HSDB | |
| 120 °C (248 °F) | at 760 mmHg | CAMEO | |
| Melting point | -95 °C (-139 °F) | HSDB | |
| Density | 0.96 g/cm³ | NIOSH | |
| 0.962 g/cm³ | at 20 °C | HSDB | |
| 0.924 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Miscible with water | HSDB | |
| Miscible in all proportions with organic solvents | HSDB | ||
| In water, 100 mg/mL at 19 °C | at 19 °C | HSDB | |
| Vapor pressure | 12.5 mmHg | at 25 °C | HSDB |
| 12 mmHg | at 25 °C | NIOSH | |
| 11.8 mmHg | at 25 °C | CAMEO | |
| Flash point | 32.22 °C (90 °F) | HSDB | |
| 36.11 °C (97 °F) | HSDB | ||
| Autoignition temperature | 270 °C (518 °F) | at 759.813 mmHg | HSDB |
| 270 °C (518 °F) | ICSC | ||
| Lower explosive limit (LEL) | 1.6 % by volume | NIOSH | |
| 1.9 % by volume | ICSC | ||
| Upper explosive limit (UEL) | 13.8 % by volume | NIOSH | |
| 18.8 % by volume | CAMEO | ||
| 13.1 % by volume | ICSC | ||
| Vapor density | 3.11 (air = 1) | HSDB | |
| Odor threshold | The odor of could be detected at 10 ppm. | propylene glycol monomethyl ether | HSDB |
| Odor Threshold Low: 10.0 [ppm] | Haz-Map | ||
| Odor Threshold High: 100.0 [ppm] | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 1-Methoxy-2-propanol
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Air sensitive. Forms explosive peroxides on prolonged storage. may form peroxided on contact with air.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Strong oxidizing agents.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
1-METHOXY-2-PROPANOL is a methoxy alcohol derivative. The ether being relatively unreactive. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1-Methoxy-2-propanol in the storage compatibility matrix →