Substance profile
3a,4,7,7a-tetrahydro-4,7-methanoindene
3a,4,7,7a-tetrahydro-4,7-methanoindene is a colorless crystalline solid with a disagreeable camphor-like odor.
01 · Identification
What 3a,4,7,7a-tetrahydro-4,7-metha… is
3a,4,7,7a-tetrahydro-4,7-methanoindene is a colorless crystalline solid with a disagreeable camphor-like odor. Its molecular formula is C10H12 and its molecular weight is 132.2 g/mol. It boils at 172 °C, melts at 32.9 °C.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
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. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P210, P233, P241, P242, P260, P264, P270, P271, P273, P280, P301, P302, P304, P305, P312, P313, P330, P332, P337, P338, P352, P391, P403, P501
03 · Physical and chemical properties
3a,4,7,7a-tetrahydro-4,7-metha… 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 | 172 °C (341.6 °F) | HSDB | |
| 172.22 °C (342 °F) | NIOSH | ||
| 172.22 °C (342 °F) | at 760 mmHg | CAMEO | |
| Melting point | 32.9 °C (91.2 °F) | HSDB | |
| 32.22 °C (90 °F) | NIOSH | ||
| 33.61 °C (92.5 °F) | CAMEO | ||
| Density | 0.98 g/cm³ | ICSC | |
| 0.978 g/cm³ | at 20 °C | HSDB | |
| Solubility | Very soluble in ethyl ether, ethanol | HSDB | |
| Readily sol in acetone, dichloromethane, ethyl acetate, n-hexane, and toluene. | HSDB | ||
| In water, 0.020 g/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 1.4 mmHg | NIOSH | |
| 1.4 mmHg | at 20 °C | HSDB | |
| 2.3 mmHg | at 25 °C | HSDB | |
| Flash point | 24 °C (75.2 °F) | HSDB | |
| 32.22 °C (90 °F) | HSDB | ||
| Autoignition temperature | 502.78 °C (937 °F) | HSDB | |
| 505 °C (941 °F) | CAMEO | ||
| 503 °C (937.4 °F) | ICSC | ||
| Lower explosive limit (LEL) | 0.8 % by volume | HSDB | |
| Upper explosive limit (UEL) | 6.3 % by volume | HSDB | |
| Vapor density | 4.55 (air = 1) | HSDB | |
| Odor threshold | Human sensory response studies indicate that dicyclopentadiene can be detected in the range of 0.003 to 0.2 ppm ... | HSDB | |
| The odor threshold was reported as low as 0.003 ppm. | HSDB | ||
| 0.016 mg/cu m | HSDB | ||
| Critical temperature and pressure | 386.8 °C (728.2 °F) | HSDB | |
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 3a,4,7,7a-tetrahydro-4,7-metha…
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.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Strong oxidizing agents, Strong acids, Strong bases
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
DICYCLOPENTADIENE may react vigorously with oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. Can undergo exothermic polymierization reactions In the presence of various catalysts (such as acids) or initiators, if subjected to heat for prolonged periods, or if contaminated. Many undergo autoxidation upon exposure to the air to form explosive peroxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 3a,4,7,7a-tetrahydro-4,7… in the storage compatibility matrix →