Substance profile
3-Chloro-2-methyl-1-propene
3-Chloro-2-methyl-1-propene is a colorless to straw-colored liquid with a sharp, penetrating odor.
01 · Identification
What 3-Chloro-2-methyl-1-propene is
3-Chloro-2-methyl-1-propene is a colorless to straw-colored liquid with a sharp, penetrating odor. It boils at 72 °C, melts at -80 °C.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
Other names for 3-Chloro-2-methyl-1-propene
- 3-chloro-2-methylpropene
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 |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
| H317 | May cause an allergic skin reaction. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P210, P233, P241, P242, P260, P261, P270, P271, P272, P273, P280, P301, P304, P310, P312, P313, P330, P331, P333, P391, P403, P501
03 · Physical and chemical properties
3-Chloro-2-methyl-1-propene 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 | 72 °C (161.6 °F) | ICSC | |
| 72.17 °C (161.9 °F) | at 760 mmHg | DOE PAC | |
| 71.5 °C (160.7 °F) | range, midpoint shown | HSDB | |
| Melting point | -80 °C (-112 °F) | ICSC | |
| -80 °C (-112 °F) | below this value | HSDB | |
| Density | 0.92 g/cm³ | ICSC | |
| 0.928 g/cm³ | at 20 °C | CAMEO | |
| 0.9257 g/cm³ | at 20 °C | DOE PAC | |
| Solubility | Miscible in alcohol and ether, very soluble in chloroform, and soluble in acetone. | HSDB | |
| Solubility in water at 20 °C is ca. 0.05 wt%; water solubility in methylallyl chloride is 0.04 wt%. | at 20 °C | HSDB | |
| 1400 mg/l in water at 25 °C. | at 25 °C | HSDB | |
| Vapor pressure | 101.7 mmHg | at 20 °C | HSDB |
| 105.009 mmHg | at 20 °C | ICSC | |
| Flash point | -19.44 °C (-3 °F) | HSDB | |
| 33.33 °C (92 °F) | HSDB | ||
| -12.78 °C (9 °F) | CAMEO | ||
| Autoignition temperature | 540 °C (1004 °F) | ICSC | |
| Lower explosive limit (LEL) | 2.3 % by volume | CAMEO | |
| 2.2 % by volume | ICSC | ||
| 3.2 % by volume | DOE PAC | ||
| Upper explosive limit (UEL) | 9.3 % by volume | CAMEO | |
| 10.4 % by volume | ICSC | ||
| Vapor density | 3.1 (air = 1) | HSDB | |
| 3.12 (air = 1) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 3-Chloro-2-methyl-1-propene
Reactivity
METHYLALLYL CHLORIDE is sensitive to light. This chemical can react vigorously with oxidizers. It is incompatible with strong bases. It may react with water at elevated temperatures. (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 3-Chloro-2-methyl-1-prope… in the storage compatibility matrix →