Description
Cyclopentane is a cycloalkane, an organic compound with the molecular formula c5h10. The molecular weight is 70.13.
Chinese Name: 环戊烷; Name in English: Cyclopentane; Chemical Formula: C5H10; Molecular weight: 70.13; CAS Accession Number: 287-92-3; EINECS Login Number: 206-016-6; Melting Point: – 94.14 ℃; Boiling Point: 49.2 ℃; Density: 0.75 g / cm ³; Appearance: colorless transparent liquid; Flash Point: – 37 ℃; Safety Description: S9; S16； S29； S33； S61; Symbol F: danger; Hazard Description: R11; R52/53; UN Dangerous Goods No.: 1146; Solubility: insoluble in water, soluble in ethanol, ether, benzene, carbon tetrachloride, acetone and other organic solvents
Cyclopentane is a colorless, mobile and flammable liquid with benzene like odor; Insoluble in water, soluble in alcohol, ether, benzene, carbon tetrachloride and other organic solvents; Relative density (water = 1) 0.75; The relative density (air = 1) is 2.42 and the property is stable; It is mainly used as a reference material for solvent and chromatographic analysis.
Physical Properties of Cyclopentane:
CAS No.: 287-92-3
Melting Point: – 94.14 ℃
Boiling Point: 49.3 ℃
Flash Point: – 37 ℃
Refractive Index: N20 D1 four thousand and sixty-eight
Steam Pressure: 45 (20 ℃)
Relative Density (water = 1): 0.75
Solubility: Insoluble in water, soluble in ethanol, benzene, carbon tetrachloride and other organic solvents
Critical Temperature: 238.6
Critical Pressure: 4.52
Spontaneous Combustion Temperature: 682 ℉ / 361 ℃ / 634k
Cyclopentane Uses: It is used to replace freon for refrigerators, freezers and other rigid PU foam foaming agents. It is used as solvent for solvent polymerization of polyisoprene rubber and cellulose ether, instead of Freon used in refrigerator, freezer and other hard PU foam foaming agents. It is also used as a thermal insulation material for refrigerators and freezers and other foaming agents for rigid PU foam.The direct utilization of cyclopentane is mainly concentrated in the field of foaming agent. It can also be used as raw material to prepare Cyclopentanol and cyclopentanone, and can be used as accelerator to form hydrate with other small molecules and water.
Related Products & Applications
1. Reagents, Chemicals and Labware > Organic Synthesis > Product Line for synthesis > Hydrocarbons > Cycloalkanes
2. Reagents, Chemicals and Labware > Organic Synthesis > Organic Synthesis Product Groups > Hydrocarbons > Cycloalkanes
3. Reagents, Chemicals and Labware > Organic Synthesis > Organic Synthesis Products for Pharma > Organic Synthesis Building Blocks and Reagents for Pharma > Hydrocarbons > Cycloalkenes
Molecular Structure Data
1. Molar refractive index: 23.05
2. Molar volume (cm3 / mol): 88.7
3. Isotonic specific volume (90.2k): 200.2
4. Surface tension (dyne / cm): 25.9
5. Polarizability (10-24cm3): 9.14
Computational Chemistry Data
1. Reference value for hydrophobic parameter calculation (xlogp): None
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond receptors: 0
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: 0
6. Topological molecular polarity surface area: 0
7. Number of heavy atoms: 5
8. Surface charge: 0
9. Complexity: 11.6
10. Number of isotope atoms: 0
11. Determine the number of atomic stereocenters: 0
12. Number of uncertain atomic stereocenters: 0
13. Determine the number of chemical bond stereocenters: 0
14. Number of indeterminate chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Toxicology Data
Acute Toxicity
LD50: 11400mg / kg (rat oral)
LC50: 106G / m3 (inhaled by rats)
Ecological Data
Ecotoxicity LC50: 100mg / L (96h) (FISH)
In non biodegradable air, when the concentration of hydroxyl radical is 5.00 × At 105 / cm3, the degradation half-life is 66h (theoretical).
This substance is harmful to the environment. Special attention should be paid to the pollution of surface water, soil, atmosphere and drinking water.
Uses
It is used to replace freon, which is widely used in refrigerators and freezers; Foaming agent for rigid PU foam. It is used as solvent for solution polymerization of polyisoprene rubber and cellulose ether and standard material for chromatographic analysis.
security information
Dangerous goods mark: F
Hazard category code: 11-52 / 53
Safety instructions: 9-16-29-33-61
Dangerous goods transport No.: UN 1146 3 / PG 2
WGK Germany：1
RTECS No.: gy239000
HazardClass：3
PackingGroup：II
Safety terminology
S9：Keep container in a well-ventilated place.
Keep containers in a well ventilated place.
S16：Keep away from sources of ignition.
Keep away from sources of ignition.
S29：Do not empty into drains.
Do not pour into the sewer.
S33：Take precautionary measures against static discharges.
Take measures to prevent static electricity.
S61：Avoid release to the environment. Refer to special instructions / safety data sheets.
Avoid release into the environment. Refer to special instructions / safety data sheets.
Risk terminology
R11：Highly flammable.
Highly flammable.
R52/53：Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
It is harmful to aquatic organisms and may have long-term adverse effects on the water environment.
Emergency Management
1、 Leakage emergency treatment
Quickly evacuate the personnel in the leakage contaminated area to the safe area, isolate them and strictly restrict their access. Cut off the fire source. It is recommended that emergency treatment personnel wear self-contained positive pressure respirator and fire protective clothing. Cut off the source of leakage as much as possible. Prevent entry into restricted spaces such as sewers and flood drainage ditches. Small leakage: absorb with activated carbon or other inert materials. It can also be washed with emulsion made of non combustible dispersant and diluted with lotion to put into the waste water system. Massive leakage: build a dike or dig a pit to receive; Cover with foam to reduce steam damage. Transfer to tank car or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.
2、 Protective measures
Respiratory protection: when the concentration in the air exceeds the standard, wear self-priming filter gas mask (half mask).
Eye protection: generally, no special protection is required. Chemical safety glasses can be worn when exposed to high concentration.
Body protection: wear anti-static work clothes.
Hand protection: wear benzene and oil resistant gloves.
Others: smoking is strictly prohibited at the work site. Avoid long-term repeated contact.
3、 First aid measures
Skin contact: take off the contaminated clothes and wash the skin thoroughly with soapy water and clear water.
Eye contact: lift the eyelids and rinse with flowing water or normal saline. See a doctor.
Inhalation: quickly leave the site to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. See a doctor.
Ingestion: drink enough warm water, induce vomiting and seek medical advice.
Fire extinguishing method: spray water to cool the container, and move the container from the fire site to an open place if possible. If the container in the fire site has changed color or generated sound from the safety pressure relief device, it must be evacuated immediately.
Fire extinguishing agents: foam, dry powder, carbon dioxide and sand. Extinguishing with water is ineffective.