Melting point :163-165 °C (lit.)
Boiling point :115℃[at 101 325 Pa]
Density :1.33
refractive index :1,422-1,425
storage temp. :2-8°C
solubility :Aqueous Base (Sparingly), Water (Sparingly)
form :Powder
color :White to yellow
Odor :Odorless
optical activity :[α]20/D 12.5±0.5°, c = 1% in H2O
Water Solubility :soluble
Sensitive :Hygroscopic
BRN :4567087
Stability :Hygroscopic
LogP :-1.52 at 20℃
CAS DataBase Reference :867-56-1(CAS DataBase Reference)
EPA Substance Registry System :Propanoic acid, 2-hydroxy-, monosodium salt, (2S)- (867-56-1)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 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. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.