Substance profile
p-mentha-1,3-diene
p-mentha-1,3-diene: CBI; Liquid.
01 · Identification
What p-mentha-1,3-diene is
p-mentha-1,3-diene: CBI; Liquid. It boils at 173 °C, melts at 25 °C, is practically insoluble in water.
Under the GHS it carries the signal word Danger.
Other names for p-mentha-1,3-diene
- 1-isopropyl-4-methylcyclohexa-1,3-diene
- alpha-terpinene
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. |
| H302 | Harmful if swallowed. |
| H304 | May be fatal if swallowed and enters airways. |
| H317 | May cause an allergic skin reaction. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P210, P233, P241, P242, P261, P270, P272, P273, P280, P301, P312, P313, P330, P333, P391, P403, P501
03 · Physical and chemical properties
p-mentha-1,3-diene 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 | 173 °C (343.4 °F) | JECFA | |
| 174 °C (345.2 °F) | range, midpoint shown, at 760 mmHg | HMDB | |
| Melting point | 25 °C (77 °F) | below this value | HMDB |
| Density | 0.8355 g/cm³ | range, midpoint shown | JECFA |
| Solubility | Insoluble in water; soluble in most fixed oils | JECFA | |
| Soluble (in ethanol) | JECFA |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.