Cyclohexene
Enhanced Solubility Profile: Demonstrates complete miscibility with common organic solvents including acetone, ethanol, and benzene, facilitating diverse chemical synthesis applications.
Thermal Stability: Maintains molecular integrity at elevated temperatures (up to 200°C) and demonstrates suitable storage stability under controlled environmental conditions.
Industrial Provenance: Naturally occurs in coal tar fractions and can be derived as a byproduct from industrial hydrocarbon processing.
Controlled Reactivity Profile: Exhibits significant flammability and chemical reactivity, enabling specific synthetic applications while necessitating stringent safety protocols during handling and storage.
Cyclohexene is a cyclic alkene that presents as a colorless, flammable liquid with distinctive pungent olfactory characteristics at ambient conditions. Prolonged atmospheric exposure induces peroxide formation through autoxidation processes. This compound occurs naturally as a constituent of coal tar and demonstrates miscibility with numerous organic solvents including acetone, carbon tetrachloride, benzene, diethyl ether, ethanol, and hexane. It forms binary azeotropic systems with lower aliphatic alcohols, acetic acid, and related organic compounds.
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 | 14,2727 |
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 |
Cyclohexene demonstrates characteristic alkene reactivity, undergoing rapid photodecomposition when exposed to ultraviolet radiation in the presence of uranium salts. The compound maintains thermal stability when maintained at 200°C in sealed systems for extended durations, while undergoing structural isomerization to form benzene and naphthalene at elevated temperatures ranging from 400-500°C.
