Methyl butyl ketone

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A colorless liquid with a sweet ketone-like odor. Methyl butyl ketone is used as a solvent for lacquer and plastics as well as a component in paint and varnish removers.

Synonyms and Related Terms

MBK; 2-hexanone; propylacetone

Chemical structure

Methyl butyl ketone.jpg

Other Properties

Soluble in ethanol, ether. Slightly soluble in water.

Composition CH3COC4H9
CAS 591-78-6
Melting Point -57
Density 0.830
Molecular Weight mol. wt. = 100.2
Refractive Index 1.395
Boiling Point 127

Hazards and Safety

Flammable. Flash point = 23C Moderate fire risk. Inhalation, ingestion and skin absorption causes irritation. Narcotic effects at high concentrations. May be toxic.

LINK: International Chemical Safety Card

Sources Checked for Data in Record

  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 6112
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.395

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