Substance profile
1,2,3,4-tetrahydronaphthalene
1,2,3,4-tetrahydronaphthalene is a colorless liquid with an odor resembling mixture of benzene & menthol.
01 · Identification
What 1,2,3,4-tetrahydronaphthalene is
1,2,3,4-tetrahydronaphthalene is a colorless liquid with an odor resembling mixture of benzene & menthol. Its molecular formula is C10H12 and its molecular weight is 132.2 g/mol. It boils at 208 °C, melts at -35.8 °C.
Under the GHS it carries the signal word Warning.
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 |
|---|---|
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H411 | Toxic to aquatic life with long lasting effects. |
Supplemental EU statements: EUH019
Precautionary statements: P264, P273, P280, P302, P305, P313, P332, P337, P338, P352, P391, P501
03 · Physical and chemical properties
1,2,3,4-tetrahydronaphthalene 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 | 207.6 °C (405.7 °F) | at 760 mmHg | HSDB |
| 207.78 °C (406 °F) | at 760 mmHg | CAMEO | |
| 207.6 °C (405.7 °F) | ICSC | ||
| Melting point | -35.8 °C (-32.4 °F) | HSDB | |
| -30.61 °C (-23.1 °F) | CAMEO | ||
| Density | 0.9586 g/cm³ | HSDB | |
| 0.9702 g/cm³ | at 20 °C | HSDB | |
| 0.974 g/cm³ | at 20 °C | CAMEO | |
| Solubility | MISCIBLE WITH ETHANOL, BUTANOL, ACETONE, BENZENE, PETROLEUM ETHER, CHLOROFORM, &PETROLEUM ETHER, DECALIN; SOL IN METHANOL: 50.6% WT/WT; INSOL IN WATER. | HSDB | |
| SOL IN ANILINE | HSDB | ||
| SOL IN ETHER | HSDB | ||
| Vapor pressure | 1.03 mmHg | CAMEO | |
| 0.368 mmHg | at 25 °C | HSDB | |
| 0.375 mmHg | at 25 °C | ICSC | |
| Flash point | 82.22 °C (180 °F) | HSDB | |
| 71.11 °C (160 °F) | HSDB | ||
| 176 °C (348.8 °F) | Closed cup | HSDB | |
| Autoignition temperature | 385 °C (725 °F) | HSDB | |
| Lower explosive limit (LEL) | 0.8 % by volume | CAMEO | |
| 0.8 % by volume | at 150 °C | HSDB | |
| Upper explosive limit (UEL) | 5 % by volume | CAMEO | |
| 5 % by volume | at 150 °C | HSDB | |
| Vapor density | 4.6 (air = 1) | HSDB | |
| Odor threshold | Detection threshold 18 ppm in water, purity not specified. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 1,2,3,4-tetrahydronaphthalene
Storage conditions
IN GENERAL MATERIALS ... TOXIC AS STORED OR WHICH CAN DECOMP INTO TOXIC COMPONENTS ... SHOULD BE STORED IN COOL ... VENTILATED PLACE, OUT OF ... SUN, AWAY FROM ... FIRE HAZARD ... BE PERIODICALLY INSPECTED & MONITORED. INCOMPATIBLE MATERIALS SHOULD BE ISOLATED.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Prolonged, close contact with air may cause an explosion.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
TETRAHYDRONAPHTHALENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick 1979 p.151-154].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1,2,3,4-tetrahydronaphtha… in the storage compatibility matrix →