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Diisobutyl ketone																				Related Pages
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 ppmSee: 108838

Exposure Limits
			NIOSH RELTWA 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 Weight142.3	
	Boiling Point334°F
	Freezing Point-43°F
	Solubility0.05%
	Vapor Pressure2 mmHg
	Ionization Potential9.04 eV											
Specific Gravity0.81	
	Flash Point120°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 canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0713
					  MEDICAL TESTS: 0079

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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