Substance profile
2-Methylstyrene
2-Methylstyrene is a liquid.
01 · Identification
What 2-Methylstyrene is
2-Methylstyrene is a liquid. Its molecular formula is C9H10 and its molecular weight is 118.18 g/mol. It boils at 170 °C, melts at -68.5 °C, is practically insoluble in water.
Under the GHS it carries the signal word Warning. It is classed as flammable agents - 2nd degree.
Other names for 2-Methylstyrene
- 2-vinyltoluene
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 |
|---|---|
| H332 | Harmful if inhaled. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P260, P271, P273, P304, P312, P391, P501
03 · Physical and chemical properties
2-Methylstyrene 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 | 170 °C (338 °F) | HSDB | |
| 170.56 °C (339 °F) | NIOSH | ||
| Melting point | -68.5 °C (-91.3 °F) | HSDB | |
| -76.67 °C (-106 °F) | NIOSH | ||
| -69 °C (-92.2 °F) | ICSC | ||
| Density | 0.89 g/cm³ | NIOSH | |
| 0.91 g/cm³ | ICSC | ||
| 0.9077 g/cm³ | at 25 °C | HSDB | |
| Solubility | Insoluble in water | HSDB | |
| Soluble in benzene, chloroform | HSDB | ||
| 0.009% | NIOSH | ||
| Vapor pressure | 1 mmHg | NIOSH | |
| 1.85 mmHg | at 25 °C | HSDB | |
| 1.8001 mmHg | at 25 °C | ICSC | |
| Flash point | 58 °C (136.4 °F) | HSDB | |
| 60 °C (140 °F) | HSDB | ||
| 52.78 °C (127 °F) | NIOSH | ||
| Autoignition temperature | 494 °C (921.2 °F) | HSDB | |
| Lower explosive limit (LEL) | 1.9 % by volume | HSDB | |
| 0.8 % by volume | NIOSH | ||
| Upper explosive limit (UEL) | 6.1 % by volume | HSDB | |
| 11 % by volume | NIOSH | ||
| Vapor density | 4.1 (air = 1) | ICSC | |
| 4.08 (air = 1) | OSHA | ||
| Odor threshold | Odor Threshold Low: 10.0 [ppm] | Haz-Map | |
| Odor threshold from "Quick Guide: The Electronic NIOSH Pocket Guide to Chemical Hazards" | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 2-Methylstyrene
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. Recommended storage temperature: 2-8 °C
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Strong oxidizing agents, strong acids.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check 2-Methylstyrene in the storage compatibility matrix →