Diisobutyl ketone

Synonyms & Trade Names

DIBK, sym-Diisopropyl acetone, 2,6-Dimethyl-4-heptanone, Isovalerone, Valerone

CAS No.

108-83-8

RTECS No.

MJ5775000

DOT ID & Guide

1157 128

Formula

[(CH₃)₂CHCH₂]₂CO

Conversion

1 ppm = 5.82 mg/m³

IDLH

500 ppm
See: 108838

Exposure Limits

NIOSH REL

TWA 25 ppm (150 mg/m³)

OSHA PEL

TWA 50 ppm (290 mg/m³) See Appendix G

Measurement Methods

NIOSH 1300 , 2555;
OSHA 7
See: NMAM or OSHA Methods

Physical Description

Colorless liquid with a mild, sweet odor.

Molecular Weight

142.3

Boiling Point

334°F

Freezing Point

-43°F

Solubility

0.05%

Vapor Pressure

2 mmHg

Ionization Potential

9.04 eV

Specific Gravity

0.81

Flash Point

120°F

Upper Explosive Limit

(200°F): 7.1%

Lower Explosive Limit

(200°F): 0.8%

Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.

Incompatibilities & Reactivities

Strong oxidizers

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, nose, throat; headache, dizziness; dermatitis; liver, kidney damage

Target Organs

Eyes, skin, respiratory system, central nervous system, liver, kidneys

Personal Protection/Sanitation

(See protection codes)
Skin:Prevent skin contact
Eyes:No recommendation
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation

First Aid

(See procedures)
Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH

Up to 500 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode^£
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)^£
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

Diisobutyl ketone

NIOSH REL

OSHA PEL

Follow NIOSH

NIOSH Homepage