Melting point :41-45 °C(lit.)
Boiling point :97-98 °C(Press: 2 Torr)
Density :1.389 g/mL at 25 °C(lit.)
vapor pressure :0Pa at 20℃
refractive index :n20/D 1.473
Flash point :>230 °F
storage temp. :Sealed in dry,Room Temperature
solubility :Soluble in water
pka :2.11±0.10(Predicted)
form :liquid
color :colorless to pale-yellow
PH :1.5 (50g/l, H2O, 30℃)
Water Solubility :100g/L at 20℃
BRN :1741622
LogP :-1.69 at 20℃
CAS DataBase Reference :1746-03-8(CAS DataBase Reference)
EPA Substance Registry System :Phosphonic acid, ethenyl- (1746-03-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 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.