DIISOBUTYL KETONE (2,6-DIMETHYL-4-HEPTANONE)†

Chemical Identification
Chemical Identification
CAS # 108-83-8
Formula

C₉H₁₈O

Synonyms

DIBK; sym-diisopropyl acetone; 2,6-dimethyl-4-heptanone; isovalerone; valerone

Physical Properties
Physical Properties
Physical description Colorless liquid with a mild, sweet odor.
Boiling point 334°F Molecular weight 142.3
Freezing point/melting point -51.5°F Vapor pressure 2 mmHg
Flash point 140°F Vapor density
Specific gravity 0.81 Ionization potential 9.04 eV
Lower explosive limit (LEL) 0.8% at 200°F Upper explosive limit (UEL) 7.1% at 200°F
NFPA health rating 1 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.) 0924
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*

480 min

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 1300 (fully 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
Model/Type
Sampling information
(see manufacturer instructions)
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

50 ppm (290 mg/m³)

REL-TWA

25 ppm (150 mg/m³)

TLV-TWA

25 ppm [1979]

PEL-TWA

25 ppm (150 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
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

500 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 - Diisobutyl ketone

NIOSH: Pocket Guide to Chemical Hazards - Diisobutyl ketone

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Diisobutyl ketone. See annual publication for most recent information.
  • De Ceaurriz, J., Micillino, J.C., Marignac, B., Bonnet, P., Muller, J. and Guenier, J.P.: Quantitative evaluation of sensory irritating and neurobehavioral properties of aliphatic ketones in mice. Food Chem. Toxicol. 22 (7): 545-549, 1984.
  • Pohanish, R.P. (editor): Diisobutyl Ketone. In, Sittig’s Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 895-896.
  • White, R.F., Feldman, R.G., Moss, M.B. and Proctor, S.P.: Magnetic resonance imaging (MRI), neurobehavioral testing, and toxic encephalopathy: two cases. Environ. Res.61 (1): 117-123, 1993.

Last Updated Date : 12/28/2020