A2276112
Cyclopentane , 96% , 287-92-3
Synonym(s):
Cyclopentane;Pentamethylene
CAS NO.：287-92-3
Empirical Formula: C5H10
Molecular Weight: 70.13
MDL number: MFCD00001356
EINECS: 206-016-6
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -94 °C (lit.) |
| Boiling point: | 50 °C (lit.) |
| Density | 0.751 g/mL at 25 °C (lit.) |
| vapor density | ~2 (vs air) |
| vapor pressure | 18.93 psi ( 55 °C) |
| refractive index | n |
| Flash point: | −35 °F |
| storage temp. | Store below +30°C. |
| solubility | 0.156g/l insoluble |
| form | Powder |
| color | White |
| Odor | Like gasoline; mild, sweet. |
| explosive limit | 1.5-8.7%(V) |
| Water Solubility | Miscible with ethanol, ether and acetone. Slightly miscible with water. |
| λmax | λ: 198 nm Amax: 1.0 λ: 210 nm Amax: 0.50 λ: 220 nm Amax: 0.10 λ: 240-400 nm Amax: 0.01 |
| Merck | 14,2741 |
| BRN | 1900195 |
| Henry's Law Constant | 0.164, 0.240, and 0.300 at 27.9, 35.8, and 45.0 °C, respectively (dynamic headspace, Hansen et al.,
1995) |
| Exposure limits | TLV-TWA 600 ppm (～1720 mg/m3)
(ACGIH). |
| Dielectric constant | 1.9（20℃） |
| Stability: | Stable. Highly flammable. Note low flash point and wide explosion limits. Incompatible with strong oxidizing agents. Floats on water, so water is of limited value in putting out fires involving this material. |
| LogP | 3 at 20℃ |
| CAS DataBase Reference | 287-92-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Cyclopentane(287-92-3) |
| EPA Substance Registry System | Cyclopentane (287-92-3) |
Description and Uses
Cyclopentane is a colorless liquid. Molecularweight=70.15; Specific gravity=(H2O:1)=0.75; Boilingpoint=49℃; Freezing/Melting point=2 93.6℃; Vaporpressure=400 mmHg at 31℃; Relative vapor density (air-5 1)=2.42: Flash point=37.2℃; Autoignitiontemperature=361℃. Explosive limits in air: LEL=1.1%;UEL=8.7%. Hazard Identification (based on NFPA-704 MRating System): Health 1, Flammability 3, Reactivity 0.Insoluble in water
As a laboratory reagent; in the manufacture of pharmaceuticals; found in solvents and in petroleum ether; propellant pressurizing agent.
Safety
| Symbol(GHS) |  GHS02 |
| Signal word | Danger |
| Hazard statements | H225-H412 |
| Precautionary statements | P210-P273 |
| Hazard Codes | F |
| Risk Statements | 11-52/53 |
| Safety Statements | 9-16-29-33-61 |
| RIDADR | UN 1146 3/PG 2 |
| OEB | A |
| OEL | TWA: 600 ppm (1720 mg/m3) |
| WGK Germany | 1 |
| RTECS | GY2390000 |
| Autoignition Temperature | 682 °F |
| TSCA | Yes |
| HS Code | 2902 19 00 |
| HazardClass | 3 |
| PackingGroup | II |
| Hazardous Substances Data | 287-92-3(Hazardous Substances Data) |
| Toxicity | LC (2 hr in air) in mice: 110 mg/l (Lazarew) |
