Methyl Ethyl Ketone

CAS Number

78-93-3

Synonym

Butanone; 2-butanone; 3-butanone; Caswell No. 569; Meetco; MEK; Methyl acetone; AI3-07540; 2-oxobutane; EPA Pesticide Code: 044103

Occurrence/Use

Solvent, denaturing agent, cleaning agent; component of paints, lacquers, varnishes, glues, resins; production of plastics, textiles, paraffin wax; component of automobile and tobacco smoke

More information about Methyl Ethyl Ketone

Acute RELs

Acute REL (μg/m3):	13000
Species:	Human
Acute REL Toxicologic Endpoint:	Respiratory and eye irritation
Acute REL Target Organs:	Respiratory system, eyes
Severity:	Mild
Last Acute REL Revision:	1999
Acute Reference Exposure Levels Comments:	OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D2.