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Chemical Sampling Information (CSI)
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General Description

Synonyms: Mixture of meta-cyclohexanol & para-cyclohexanol; Hexahydrocresols

OSHA IMIS Code Number: 1760

Chemical Abstracts Service (CAS) Registry Number: 25639-42-3

Other Chemical Abstracts Service (CAS) Registry Numbers: 583-59-5; 589-91-3; 391-23-1

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GW0175000; 28558

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN2617 Flammable Liquid

Chemical Description and Physical Properties:

straw-colored liquid with a weak, coconut oil odor
molecular weight: 114
vapor pressure: <1 mm
boiling point: 311 to 356°F
melting point: <6°F

Incompatibilities: Strong oxidizers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 100 ppm, 470 mg/m3

Construction Industry: 100 ppm, 470 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 50 ppm, 234 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 50 ppm TWA

Health Factors

Potential Symptoms: Headaches; eye, respiratory system irritation; In animals: narcosis; liver, kidney damage

Health Effects: Irritation-Eye, Nose, Throat, Skin---Mild (HE16) Narcosis (HE8); Cumulative liver and kidney damage (HE3)

Affected Organs: Respiratory system, skin, eyes; in animals: CNS, liver, kidneys

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Charcoal Tube (100/50 mg sections, 20/40 mesh)
    analytical solvent: Methylene Chloride
    maximum volume: 12 Liters
    maximum flow rate: 0.2 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 1 (NIOSH 1404 [19 KB PDF, 3 pages])
    sampling analytical error: 0.10
    method classification: Fully Validated

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company: MSA
    part #: 95097
    range:
    25-800 ppm
    class: Mfg

  • device: Detector Tube
    company: Kitagawa
    part #: 199U
    range:
    5-200 ppm
    class: Mfg

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 0.5 ppm @ 9.5 um
    class: Mfg

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