Cyclohexene
General Description
- Synonyms: Benzene tetrahydride; 1,2,3,4-Tetrahydrobenzene
- OSHA IMIS Code Number: 0840
- Chemical Abstracts Service (CAS) Registry Number: 110-83-8
- NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GW2500000; 28668
- Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN2256 Flammable Liquid
- NIOSH Pocket Guide to Chemical Hazards, Cyclohexene: chemical description, physical properties, potentially hazardous incompatibilities, and more
- Chemical Description and Physical Properties:
- colorless liquid with a sweetish odor
- molecular weight: 82
- vapor pressure: 67 mm
- boiling point: 181°F
- melting point: -155°F
Incompatibilities: Strong oxidizers
Exposure Limits
- OSHA Permissible Exposure Limit (PEL):
- General Industry: 300 ppm, 1015 mg/m3
- Construction Industry: 300 ppm, 1015 mg/m3 TWA
- American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 300 ppm, 1010 mg/m3 TWA
- National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 300 ppm TWA
Health Factors
Potential Symptoms: Skin, eye, respiratory system irritation; drowsiness
Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15) Cumulative systemic toxicity (HE3); Narcosis (HE8)
Affected Organs: Skin, eyes, respiratory system
Monitoring Methods used by OSHA
Primary Laboratory Sampling/Analytical Method (SLC1):
- Charcoal Tube (100/50 mg sections, 20/40 mesh)
- analytical solvent: Carbon Disulfide
- maximum volume: 5 Liters
- maximum flow rate: 0.2 L/min
- current analytical method: Gas Chromatography; GC/FID
- method reference: 1 (NIOSH 1500 (PDF))
- sampling and analytical error: 0.12
- method classification: Partially Validated
Secondary Laboratory Sampling/Analytical Method (SAM2):
- Detector Tube
- company: Gastec
- part #: 151
- range: 100-1000 ppm
- class: Mfg
- Instrumentation
- company: Infrared Spectrophotometer
- part #: MIRAN 103
- range: 0-600 ppm @ 8.7 um
- class: Mfg
- Instrumentation
- company: Infrared Spectrophotometer
- part #: MIRAN 1A & 1B
- range: 4.4 ppm @ 8.8 um
- class: Mfg
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