METHYL ISOBUTYL CARBINOL (METHYL AMYL ALCOHOL)†

Chemical Identification
Chemical Identification
CAS # 108-11-2
Formula

C₆H₁₄O

Synonyms
 

isobutylmethylcarbinol; methyl amyl alcohol; 4-methyl-2-pentanol; MIBC

Physical Properties
Physical Properties
Physical description Colorless liquid with a mild odor.
Boiling point 271°F Molecular weight 102.18
Freezing point/melting point -130°F Vapor pressure 3 mmHg
Flash point 106°F Vapor density
Specific gravity 0.81 Ionization potential
Lower explosive limit (LEL) 1% Upper explosive limit (UEL) 5.5%
NFPA health rating 2 NFPA fire rating 2
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.) 1670
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 1402 (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
 

Wipe with charcoal pad, seal in glass vial for shipment. [3M 3500]

Bulk Method
Bulk Method
 

 

On-Site Screening Techniques
On-Site Screening Techniques
Device Infrared spectrophotometer
Model/Type Miran 1A & 1B
Sampling information
(see manufacturer instructions)
0.8 ppm@8.7 µm
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
 

25 ppm (100 mg/m³)

REL-TWA
 

25 ppm (100 mg/m³)

TLV-TWA

20 ppm (83 mg/m³) [2020]

PEL-TWA
 

25 ppm (100 mg/m³)

PEL-STEL
 

 

REL-STEL
 

40 ppm (165 mg/m³)

TLV-STEL

40 ppm (167 mg/m³) [2020]

PEL-STEL
 

40 ppm (165 mg/m³)

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

Y

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
 

400 ppm

Carcinogenic classifications: Not listed 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 - Methyl isobutyl carbinol

NIOSH: Pocket Guide to Chemical Hazards - Methy isobutyl carbinol

Literature References

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

Last Updated Date : 05/17/2022