Substance profile
1-isopropyl-4-methylbenzene
1-isopropyl-4-methylbenzene is a colorless transparent liquid with a sweetish aromatic odor.
01 · Identification
What 1-isopropyl-4-methylbenzene is
1-isopropyl-4-methylbenzene is a colorless transparent liquid with a sweetish aromatic odor. Its molecular formula is C10H14 and its molecular weight is 134.22 g/mol. It boils at 177 °C, melts at -68.9 °C.
Under the GHS it carries the signal word Danger.
Other names for 1-isopropyl-4-methylbenzene
- p-cymene
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.
| Code | Hazard statement |
|---|---|
| H226 | Flammable liquid and vapour. |
| H331 | Toxic if inhaled. |
| H304 | May be fatal if swallowed and enters airways. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P210, P233, P241, P242, P260, P271, P273, P304, P310, P391, P403, P501
03 · Physical and chemical properties
1-isopropyl-4-methylbenzene 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 | 177.1 °C (350.8 °F) | HSDB | |
| 177.22 °C (351 °F) | at 760 mmHg | CAMEO | |
| 177 °C (350.6 °F) | ICSC | ||
| Melting point | -68.9 °C (-92 °F) | HSDB | |
| -67.89 °C (-90.2 °F) | CAMEO | ||
| -68 °C (-90.4 °F) | ICSC | ||
| Density | 0.85 g/cm³ | ICSC | |
| 0.8573 g/cm³ | at 20 °C | HSDB | |
| 0.857 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Miscible with ethanol, acetone, benzene, carbon tetrachloride and petroleum ether | HSDB | |
| In water, 23.4 mg/L at 25 °C | at 25 °C | HSDB | |
| Solubility in water, g/100ml at 25 °C: 0.002 | at 25 °C | ICSC | |
| Vapor pressure | 1.5001 mmHg | at 20 °C | ICSC |
| 1.5 mmHg | at 25 °C | HSDB | |
| Flash point | 47.22 °C (117 °F) | HSDB | |
| Autoignition temperature | 436 °C (816.8 °F) | From table | HSDB |
| 436.11 °C (817 °F) | CAMEO | ||
| 435 °C (815 °F) | ICSC | ||
| Lower explosive limit (LEL) | 0.7 % by volume | CAMEO | |
| Upper explosive limit (UEL) | 5.6 % by volume | CAMEO | |
| 5.6 % by volume | at 100 °C | HSDB | |
| Vapor density | 4.62 (air = 1) | HSDB | |
| Critical temperature and pressure | 378.85 °C (713.9 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 1-isopropyl-4-methylbenzene
Storage conditions
Safe storage: Fireproof.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Reacts with oxidants. Attacks rubber.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as P-CYMENE, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1-isopropyl-4-methylbenze… in the storage compatibility matrix →