Name | Cyclohexylbenzene |
Synonyms | CHB
Cyclohexylbenzene PHENYLCYCLOHEXANE Phenylcyclohexane 3-Phenylcyclohexane 1,1'-Biphenyl, 1,2,3,4,5,6-hexahydro- |
CAS | 827-52-1 |
EINECS | 212-572-0 |
InChI | InChI=1/C12H16/c1-3-7-11(8-4-1)12-9-5-2-6-10-12/h1,3-4,7-8,12H,2,5-6,9-10H2 |
InChIKey | IGARGHRYKHJQSM-UHFFFAOYSA-N |
Molecular Formula | C12H16 |
Molar Mass | 160.26 |
Density | 0.95g/mLat 25°C(lit.) |
Melting Point | 5 °C |
Boling Point | 239-240°C(lit.) |
Flash Point | 210°F |
Water Solubility | INSOLUBLE |
Solubility | INSOLUBLE |
Vapor Presure | 25Pa at 25℃ |
Appearance | Liquid |
Color | Clear colorless |
Maximum wavelength(λmax) | ['260nm(Cyclohexane)(lit.)'] |
BRN | 1906803 |
Storage Condition | Sealed in dry,Room Temperature |
Stability | Stable. Flammable. Incompatible with strong oxidizing agents. |
Refractive Index | n20/D 1.526(lit.) |
Physical and Chemical Properties | Colorless oily liquid. Melting Point 7-8 ℃, boiling point 235-236 ℃,127-128 ℃(4.0kPa), flash point 98 ℃, relative density 0.938(25/15 ℃), refractive index 1.523(25 ℃). Soluble in alcohol, acetone, benzene, carbon tetrachloride, castor oil, hexane and xylene, insoluble in water and glycerol. |
Use | Used as a high boiling point solvent and penetrant, also used in organic synthesis |
Risk Codes | R22 - Harmful if swallowed R36/38 - Irritating to eyes and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
UN IDs | UN 3082 9/PG 3 |
WGK Germany | 2 |
RTECS | CZ1330000 |
TSCA | Yes |
HS Code | 29029090 |
Hazard Class | 9 |
Packing Group | III |
LogP | 5.6 at 20℃ |
NIST chemical information | information provided by: webbook.nist.gov (external link) |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Use | used as a high boiling point solvent, penetrant, and intermediate in organic synthesis. used as high boiling point solvent and penetrant, also used in organic synthesis |
production method | freshly distilled cyclohexene is added dropwise to a mixture of benzene and sulfuric acid with vigorous stirring, the temperature was maintained at 15±5 ° C., and about 0.5-1H was added. After the addition, the reaction was continued for 1H. The sulfuric acid layer is separated, and the oil layer is washed with water, alkali liquor and water in turn, fractionated. The unreacted benzene is distilled out first, and then the 230-260 ℃ fraction is collected, and the normal boiling point fraction is fractionated again, the product cyclohexylbenzene was obtained. |
category | flammable liquid |
toxicity grade | poisoning |
Acute toxicity | oral-rat LD50: 3700 mg/kg; Oral-mouse LD50: 2800 mg/kg |
stimulation data | Skin-rabbit 500 mg/24 h moderate |
flammability hazard characteristics | flammable in open flame, high temperature, strong oxidant; combustion emissions |
storage and transportation characteristics | The package is complete, light, light; The warehouse is ventilated, away from open flame, high temperature, separate from oxidant |
fire extinguishing agent | foam, carbon dioxide, dry powder, sand |