Boiling point :64°C 0,7mm
Density :1.032 g/mL at 25 °C(lit.)
vapor pressure :47.5Pa at 50℃
refractive index :n20/D 1.51(lit.)
Flash point :>230 °F
storage temp. :Inert atmosphere,2-8°C
form :clear liquid
color :Colorless to Almost colorless
Sensitive :Air Sensitive
BRN :2804900
LogP :2.17 at 25℃
CAS DataBase Reference :1638-86-4
EPA Substance Registry System :Phosphonous acid, phenyl-, diethyl ester (1638-86-4)

Symbol(GHS):
Signal word:	Danger
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.