Melting point :30-34 °C(lit.)
Boiling point :84 °C20 mm Hg(lit.)
Density :1.2000
refractive index :1.3972 (estimate)
FEMA :3723 | 2-OXOBUTYRIC ACID
Flash point :179 °F
storage temp. :Store at +2°C to +8°C.
solubility :H2O: soluble0.1g/mL, clear
form :liquid
pka :2.5(at 25℃)
color :White to Almost white
Specific Gravity :1.3972 (20/4℃)
PH :3.11(1 mM solution);2.38(10 mM solution);1.79(100 mM solution);
Odor :at 1.00 % in propylene glycol. sweet brown caramel creamy lactonic
Odor Type :caramellic
JECFA Number :589
BRN :1700514
InChIKey :TYEYBOSBBBHJIV-UHFFFAOYSA-N
LogP :-0.75
CAS DataBase Reference :600-18-0(CAS DataBase Reference)
NIST Chemistry Reference :Butanoic acid, 2-oxo-(600-18-0)
EPA Substance Registry System :2-Oxobutyric acid (600-18-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Precautionary statements:	P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P363 Wash contaminated clothing before reuse.