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Cyclohexylamine

General Description

  • Synonyms: Aminocyclohexane; Aminohexahydrobenzene; Aniline Hexahydro; CHA; Hexahydrobenzenamine
  • OSHA IMIS Code Number: 0842
  • Chemical Abstracts Service (CAS) Registry Number: 108-91-8
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GX0700000; 28789
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN2375 129; Flammable Liquid and Corrosive
  • Chemical Description and Physical Properties:
    • molecular weight: 99.20
    • molecular formula: C6H13N

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 10 ppm, 41 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 10 ppm TWA

Health Factors

Health Effects: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Mutagen (HE2); CNS disturbances (HE7)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Coated XAD-7 Tube (80/40 mg sections) Coating is 10% Phosphoric Acid.
  • analytical solvent: 50:50 Methanol: Deionized Water
  • alternate solvent: 0.88 N NH4OH in Methanol
  • maximum volume: 20 Liters
  • maximum flow rate: 0.2 L/min
  • current analytical method: Gas Chromatography; GC/FID
  • method reference: 2 (OSHA In-House File)
  • method classification: Partially Validated
  • note: The ammonium hydroxide eliminates the need for neutralization of the desorbing solution but the ammonia liberated may be an interference in the analysis.
Secondary Laboratory Sampling/Analytical Method (SAM2):
  • Detector Tube
  • company: MSA
  • part #: 92115
  • range: 5-100 ppm
  • class: Mfg
  • Detector Tube
  • company: Gastec
  • part#: 180
  • range: 1-60 ppm
  • class: Mfg

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