NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

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. See: IDLH INDEX
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
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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
Not available.
Important additional information about respirator selection
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   See ICSC CARD: 0353