Melting point :-33--32.7 °C (lit.)
Boiling point :137 °C (lit.)
Density :1.236 g/mL at 25 °C (lit.)
refractive index :n20/D 1.446(lit.)
Flash point :161 °F
storage temp. :under inert gas (nitrogen or Argon) at 2-8°C
form :Liquid
pka :7.89±0.46(Predicted)
color :Clear yellow
Water Solubility :50 g/L (20 ºC)
CAS DataBase Reference :4755-81-1(CAS DataBase Reference)
NIST Chemistry Reference :Butanoic acid, 2-chloro-3-oxo-, methyl ester(4755-81-1)
EPA Substance Registry System :Methyl 2-chloroacetoacetate (4755-81-1)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 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:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.