N-BUTYL ALCOHOL (N-BUTANOL)†

Chemical Identification
Chemical Identification
CAS # 71-36-3
Formula

C₄H₁₀O

Synonyms

1-butanol, butyl alcohol, 1-hydroxybutane, n-propyl carbinol, butanol

Physical Properties
Physical Properties
Physical description Colorless liquid with a strong, characteristic, mildly alcoholic odor.
Boiling point 243°F Molecular weight 74.1
Freezing point/melting point -129°F Vapor pressure 15.51 mmHg
Flash point 84°F Vapor density
Specific gravity 0.81 Ionization potential 10.04 eV
Lower explosive limit (LEL) 1.4% Upper explosive limit (UEL) 11.2%
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.) 0460
Sampling group OVSG-2
Sampler/Sampling media 2 Anasorb 747 sampling tubes (6 mm glass tubes, the front tube contains 400 and the back 200 mg of sorbent) connected in series [SKC 226-82]
Sampling time*

240 min

Sampling volume (TWA)*

12 L

Sampling flow rate (TWA)*

0.05 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference OSHA 5001 (fully validated)
Notes

Separate tubes and seal each after sampling.

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 Detector tube Detector tube
Model/Type Dräger - Alcohol 25/a, 8101631 Gastec 114 Matheson-Kitagawa 8014-189U
Sampling information
(see manufacturer instructions)
10 strokes, approx 50-5000 ppm range, uncertainty approx 41% 3 strokes, 1-150 ppm range, uncertainty 25% for 2.5-30 ppm, 16% for 30-150 ppm 2 or 4 strokes, approx 4-300 ppm 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 TLV-TWA

20 ppm [1998]

PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C

50 ppm (150 mg/m³)

TLV-C PEL-C

50 ppm (150 mg/m³)

Skin notation

N

Skin notation

Y

Skin notation

N

Skin notation

Y

Notes:

See 29 CFR 1910.1000 Table Z-1.

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

1400 ppm

Carcinogenic classifications: EPA-D Notes:

10% of LEL

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - N-Butyl alcohol

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

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - n-Butanol. See annual publication for most recent information.
  • NIOSH: Occupational Safety and Health Guideline for n-Butyl Alcohol. 1992.

Last Updated Date : 01/05/2021