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Chemical Sampling Information (CSI)
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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 Guide: 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):

  • sampling media: 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):

  • device: Detector Tube
    company: MSA
    part #: 92115
    range: 5-100 ppm
    class: Mfg

    device: Detector Tube
    company: Gastec
    part#: 180
    range: 1-60 ppm
    class: Mfg

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