Cyclohexene CAS：110-83-8
Excellent Solubility Performance: This compound can be fully mixed with common organic solvents such as acetone, ethanol and benzene, which supports its wide application in various chemical synthesis processes.
Outstanding Thermal Stability: It can keep stable molecular structure under high temperature up to 200°C, and has good storage stability in a controlled environment.
Natural & Industrial Sources: This substance exists naturally in coal tar fractions, and can also be obtained as a by‑product in industrial hydrocarbon treatment processes.
Controlled Chemical Reactivity: It has obvious flammability and chemical reactivity, which is suitable for specific synthetic uses, but requires strict safety measures in operation and storage.
Cyclohexene belongs to the category of cyclic alkenes, appearing as a colorless and flammable liquid with an obvious pungent odor at room temperature. When exposed to air for a long time, it will produce peroxides through automatic oxidation. This substance exists naturally in coal tar and can be mutually soluble with many organic solvents, such as acetone, carbon tetrachloride, benzene, diethyl ether, ethanol and n-hexane. It can also form binary azeotropes with low-carbon aliphatic alcohols, acetic acid and other similar organic compounds.
Parameters
| Melting point | ?104 °C (lit.) |
| Boiling point | 83 °C (lit.) |
| density | 0.811 g/mL at 25 °C (lit.) |
| vapor density | 2.8 (vs air) |
| vapor pressure | 160 mm Hg ( 20 °C) |
| refractive index | n20/D 1.446(lit.) |
| Fp | 10 °F |
| storage temp. | Store below +30°C. |
| solubility | water: insoluble |
| form | Liquid |
| color | Clear colorless |
| Specific Gravity | 0.811 |
| PH | 7-8 (0.2g/l, H2O, 20℃) |
| explosive limit | 1.2-7.7%(V) |
| Water Solubility | insoluble |
| Merck | 142,727 |
| BRN | 906737 |
| Henry's Law Constant | 3.85 x 10-2 atm?m3/mol at 25 °C (Nielsen et al., 1994) |
| Exposure limits | TLV-TWA 300 ppm (～1015 mg/m3) (ACGIH, OSHA, and NIOSH); IDLH 10,000 ppm (NIOSH). |
| Dielectric constant | 18.3（20℃） |
| Stability: | Stable in the absence of air - may form peroxides in storage. Incompatible with oxidizing agents. Highly flammable. |
| InChIKey | HGCIXCUEYOPUTN-UHFFFAOYSA-N |
| LogP | 2.99 at 25℃ |
| CAS DataBase Reference | 110-83-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Cyclohexene(110-83-8) |
| EPA Substance Registry System | Cyclohexene (110-83-8) |
Safety Information
| Hazard Codes | F,Xn |
| Risk Statements | 11-21/22-65 |
| Safety Statements | 16-29-33-36/37-62 |
| RIDADR | UN 2256 3/PG 2 |
| OEB | A |
| OEL | TWA: 300 ppm (1015 mg/m3) |
| WGK Germany | 1 |
| RTECS | GW2500000 |
| Autoignition Temperature | 590 °F |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29021990 |
| Hazardous Substances Data | 110-83-8(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 1300 mg/kg |
| IDLA | 2,000 ppm |
