Melting point :49-50 °C(lit.)
alpha :－25 º (C=6% IN H2O)
Boiling point :90-92 °C(Press: 0.08 Torr)
Density :1.195±0.06 g/cm3(Predicted)
Flash point :112 °C
storage temp. :Sealed in dry,2-8°C
solubility :DMSO (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly), Water (Slightly)
form :Oil to Semi-Solid
pka :4.36±0.10(Predicted)
color :Colourless to Pale Yellow
optical activity :[α]20/D 25±1°, c = 6% in H2O
BRN :1720568
InChI :InChI=1S/C4H8O3/c1-3(5)2-4(6)7/h3,5H,2H2,1H3,(H,6,7)/t3-/m1/s1
InChIKey :WHBMMWSBFZVSSR-GSVOUGTGSA-N
SMILES :C(O)(=O)C[C@H](O)C
CAS DataBase Reference :625-72-9(CAS DataBase Reference)
EPA Substance Registry System :Butanoic acid, 3-hydroxy-, (3R)- (625-72-9)

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. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.