NIOSH Pocket Guide to Chemical Hazards

Cyclopentane CAS 287-92-3
C5H10 RTECS GY2390000
Synonyms & Trade Names
Pentamethylene
DOT ID & Guide
1146 128
Exposure
Limits
NIOSH REL: TWA 600 ppm (1720 mg/m3)
OSHA PEL: none
IDLH N.D. Conversion 1 ppm = 2.87 mg/m3
Physical Description
Colorless liquid with a mild, sweet odor.
MW: 70.2
BP: 121°F
FRZ: -137°F
Sol: Insoluble
VP(88°F): 400 mmHg
IP: 10.52 eV

Sp.Gr: 0.75
Fl.P: -35°F
UEL: 8.7%
LEL: 1.1%

Class IB Flammable Liquid: Fl.P. below 73F and BP at or above 100F.
Incompatibilities & Reactivities
Strong oxidizers (e.g., chlorine, bromine, fluorine)
Measurement Methods
None available
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Daily
Remove: When wet (flammable)
Change: No recommendation

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, nose, throat; dizziness, euphoria, incoordination, nausea, vomiting, stupor; dry, cracking skin
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION