Melting point :114-116 °C(lit.)
Density :2.00 g/mL at 20 °C
storage temp. :Hygroscopic, Refrigerator, Under inert atmosphere
solubility :H₂O: 2 M at 20 °C, clear, colorless
form :Crystalline
Specific Gravity :1.95～2.05 (20/20℃)
color :White to Pale Beige
PH :5.0-6.0 ( in neat)
Water Solubility :Soluble in water (2 M, clear, colorless) at 20°C. Soluble in organic solvents.
Hydrolytic Sensitivity :0: forms stable aqueous solutions
Stability :Hygroscopic
CAS DataBase Reference :21907-50-6(CAS DataBase Reference)

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. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405 Store locked up.