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Substance Name: 2-Butanone oxime
RN: 96-29-7
UNII: 51YGE935U9


  • Used extensively in paints, resins & adhesives.

Molecular Formula

  • C4-H9-N-O

Molecular Weight

  • 87.1211

Classification Codes

  • Mutation Data
  • Skin / Eye Irritant
  • Tumor Data
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Names and Synonyms

Name of Substance

  • 2-Butanone oxime


  • 2-Butanone oxime
  • 4-01-00-03250 (Beilstein Handbook Reference)
  • BRN 1698241
  • Butanone oxime
  • CCRIS 1382
  • EC 202-496-6
  • EINECS 202-496-6
  • Ethyl methyl ketone oxime
  • Ethyl methyl ketoxime
  • Ethyl-methylketonoxim
  • Ethyl-methylketonoxim [Czech]
  • HSDB 8043
  • MEK-oxime
  • Methyl ethyl ketone oxime
  • Methyl ethyl ketoxime
  • NSC 442
  • Skino #2
  • Troykyd anti-skin B
  • UNII-51YGE935U9
  • USAF AM-3
  • USAF EK-906

Systematic Names

  • 2-Butanone, oxime
  • Butanone oxime

Superlist Names

  • 2-Butanone, oxime
  • Methyl ethyl ketoxime

Registry Numbers

CAS Registry Number

  • 96-29-7


  • 51YGE935U9

Other Registry Numbers

  • 105287-28-3
  • 2115045-28-6

System Generated Number

  • 0000096297

Structure Descriptors








Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 200mg/kg (200mg/kg)   National Technical Information Service. Vol. AD277-689,
mouse LD50 oral 1gm/kg (1000mg/kg)   National Technical Information Service. Vol. OTS0524679,
rabbit LD50 skin 200uL/kg (0.2mL/kg)   National Technical Information Service. Vol. OTS0529835,
rat LC inhalation > 50gm/m3/4H (50000mg/m3) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) National Technical Information Service. Vol. OTS0524693,
rat LD skin > 2gm/kg (2000mg/kg)   National Technical Information Service. Vol. OTS0530016,
rat LD50 oral 930mg/kg (930mg/kg)   Office of Toxic Substances Report. Vol. OTS,
rat LD50 subcutaneous 2702mg/kg (2702mg/kg)   Nagoya Journal of Medical Science. Vol. 29, Pg. 393, 1967.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point -2.95E+01 deg C   EXP
Boiling Point 152.5 deg C   EXP
pKa Dissociation Constant 12.45 (none)   EXP
log P (octanol-water) 0.63 (none)   EXP
Water Solubility 1.00E+05 mg/L 25 EXP
Vapor Pressure 0.904 mm Hg 25 EST
Henry's Law Constant 1.04E-05 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 1.48E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.