TERT-BUTYL ALCOHOL (TERT-BUTANOL)†

Chemical Identification
Chemical Identification
CAS # 75-65-0
Formula

C₄H₁₀O

Synonyms

2-methyl-2-propanol; trimethylcarbinol; TBA

Physical Properties
Physical Properties
Physical description Colorless solid or liquid (above 77°F) with a camphor-like odor.
Boiling point 180°F Molecular weight 74.14
Freezing point/melting point 78°F Vapor pressure 42 mmHg at 77°F
Flash point 52°F Vapor density 2.55
Specific gravity 0.78 at 78.8°F Ionization potential 9.70 eV
Lower explosive limit (LEL) 2.4% Upper explosive limit (UEL) 8%
NFPA health rating 2 NFPA fire rating 3
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0462
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*
Sampling volume (TWA)*

1-10 L

Sampling flow rate (TWA)*

0.01-0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference NIOSH 1400 (partially validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube
Model/Type Gastec 102L
Sampling information
(see manufacturer instructions)
2 strokes, approx 0.05-1.2% range
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

100 ppm (300 mg/m³)

REL-TWA

100 ppm (300 mg/m³)

TLV-TWA

100 ppm [1992]

PEL-TWA

100 ppm (300 mg/m³)

PEL-STEL REL-STEL

150 ppm (450 mg/m³)

TLV-STEL PEL-STEL

150 ppm (450 mg/m³)

PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

1600 ppm

Carcinogenic classifications: TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Tert-Butyl alcohol

NIOSH: Pocket Guide to Chemical Hazards - tert-Butyl alcohol

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - tert-Butanol. See annual publication for most recent information.

Last Updated Date : 01/12/2021