Melting point :-42.8 °C
Boiling point :166 °C(lit.)
Density :0.938 g/mL at 20 °C
vapor density :4 (vs air)
vapor pressure :<1 mm Hg ( 20 °C)
refractive index :n20/D 1.423(lit.)
Flash point :132 °F
storage temp. :Store below +30°C.
solubility :Soluble in alcohol, ether (Weast, 1986), and many other solvents, particular ketones such as acetone and 2-butanone.
pka :14.57±0.29(Predicted)
form :Liquid
color :Clear colorless
Odor :Mild, pleasant.
explosive limit :1.8-6.9%(V)
Water Solubility :MISCIBLE
λmax :249nm(lit.)
Merck :14,2964
BRN :1740440
Specific Activity :25-50 mCi/mmol
Solvent :Ethanol
Concentration :0.1 mCi/ml
Exposure limits :TLV-TWA 240 mg/m³ (50 ppm) (ACGIH); IDLH 2100 ppm (NIOSH).
Dielectric constant :18.2（Ambient）
Stability :Stable. Flammable. Incompatible with strong oxidizing agents, amines, ammonia, strong acids, strong bases, alkalies, aluminium.
LogP :-0.09 at 20℃
CAS DataBase Reference :123-42-2(CAS DataBase Reference)
NIST Chemistry Reference :4-Hydroxy-4-methylpentan-2-one(123-42-2)
EPA Substance Registry System :4-Hydroxy-4-methyl-2-pentanone (123-42-2)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P308+P313 IF exposed or concerned: Get medical advice/attention.