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Chemical Sampling Information (CSI)
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General Description

Synonyms: tert-Butanol; 2-Methyl-2-propanol; TBA; Trimethylcarbinol

OSHA IMIS Code Number: 0462

Chemical Abstracts Service (CAS) Registry Number: 75-65-0

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: EO1925000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1120 129

NIOSH Pocket Guide to Chemical Hazards, tert-Butyl Alcohol: chemical description, physical properties, potentially hazardous incompatibilities, and more

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 29 CFR 1910.1000 Table Z-1 - 100 ppm, 300 mg/m3 TWA

Construction Industry: 29 CFR 1926.55 Appendix A - 100 ppm, 300 mg/m3 TWA

Maritime: 29 CFR 1915.1000 Table Z-Shipyards - 100 ppm, 300 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 100 ppm, 303 mg/m3 TWA; Appendix A4 - Not Classifiable as a Human Carcinogen (TLV listed under tert-Butanol)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 100 ppm, 300 mg/m3 TWA; 150 ppm, 450 mg/m3 STEL

Health Factors

NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 1,600 ppm

Potential Symptoms: Drowsiness, dizziness, narcosis; headache; eye, skin, nose, throat irritation; dry skin, redness, dermatitis

Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15); Narcosis (HE8); Explosive, Flammable, Safety (HE18)

Affected Organs: Eyes, skin, respiratory system, CNS

Notes:

  1. Insufficient odor warning when exposure limit is exceeded. Highly flammable, and vapor/air mixtures are explosive.

Literature Basis:

Date Last Revised: 01/22/2004

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Charcoal Tube (100/50 mg sections, 20/40 mesh)
    analytical solvent: (99:1) Carbon Disulfide/2-Butanol
    alternative solvent: (99:1) Carbon Disulfide/Dimethylformamide
    maximum volume: 10 Liters
    maximum flow rate: 0.2 L/min (TWA)
    maximum volume: 3 Liters
    maximum flow rate: 0.2 L/min (STEL)
    current analytical method: Gas Chromatography; GC/FID
    method reference: NIOSH Analytical Method (NIOSH 1400 [25 KB PDF, 4 pages])
    method classification: Partially Validated

On-Site Sampling Techniques/Methods:

  • device: Detector Tube
    manufacturer: Gastec
    model/type: 102L
    sampling information: 2 strokes
    upper measurement limit: 1.2%
    detection limit: approximately 0.05%
    overall uncertainty: unknown
    method reference: on-site air secondary (manufacturer)

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