Name | Cyclopentene |
Synonyms | NSC 5160 Cyclopenten Cyclopentene 1-Cyclopentene Cyclopentene, tech. CYCLOPENTENE, STAB. Cyclopentene [UN2246] [Flammable liquid] UN2246 |
CAS | 142-29-0 10016-46-3 |
EINECS | 205-532-9 |
InChI | InChI=1/C5H8/c1-2-4-5-3-1/h1-2H,3-5H2 |
InChIKey | LPIQUOYDBNQMRZ-UHFFFAOYSA-N |
Molecular Formula | C5H8 |
Molar Mass | 68.12 |
Density | 0.771g/mLat 25°C(lit.) |
Melting Point | −135°C(lit.) |
Boling Point | 44-46°C(lit.) |
Flash Point | <−30°F |
Water Solubility | immiscible |
Solubility | water: soluble0.535g/L at 25°C |
Vapor Presure | 20.89 psi ( 55 °C) |
Appearance | Liquid |
Specific Gravity | 0.771 |
Color | Colorless |
BRN | 635707 |
Storage Condition | 0-6°C |
Stability | Stable. Highly flammable. Incompatible with strong oxidizing agents. Store cold. |
Sensitive | Air Sensitive |
Refractive Index | n20/D 1.421(lit.) |
Physical and Chemical Properties | Characteristics of colorless, irritating gas. soluble in ethanol, ether, benzene and petroleum ether, insoluble in water. |
Use | Used as comonomer and also used in organic synthesis |
Risk Codes | R11 - Highly Flammable R21/22 - Harmful in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. R65 - Harmful: May cause lung damage if swallowed R67 - Vapors may cause drowsiness and dizziness R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R38 - Irritating to the skin |
Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S33 - Take precautionary measures against static discharges. S36 - Wear suitable protective clothing. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 2246 3/PG 2 |
WGK Germany | 3 |
RTECS | GY5950000 |
FLUKA BRAND F CODES | 10-23 |
TSCA | Yes |
HS Code | 29021990 |
Hazard Class | 3 |
Packing Group | II |
Toxicity | Acute oral LD50 for rats is 1,656 mg/kg (quoted, RTECS, 1985). |
colorless, irritating liquid. Melting Point -135.076 °c. Boiling point 44.2 °c. The relative density was 0.772. Refractive index 4225. Flash point -50 °c. Liquid viscosity 0.2mPa.s(50 C). The surface tension was 16.0 mN/m. Ignition point 385 °c. Explosion limit (20 ℃,O.lMPa)3.4% ~ 8.5% (volume). The critical temperature is 233. The critical volume was 0.276 ml/g. The critical pressure is 4.64MPa. Soluble in ethanol, ether, benzene and petroleum ether, insoluble in water.
It is used in large quantities for the production of polycyclopentene rubber. It is also used for the preparation of cyclopentyl phenol (disinfectant), cyclic aldehyde, cyclopentyl glycol and so on.