Melting point :-70 °C
Boiling point :50-51 °C/2 mmHg (lit.)
Density :1.072 g/mL at 25 °C (lit.)
vapor pressure :7hPa at 20℃
refractive index :n20/D 1.407(lit.)
Flash point :180 °F
form :Liquid
Specific Gravity :1.072
color :Colorless
Water Solubility :miscible (hydrolysis)
Sensitive :Moisture Sensitive
Hydrolytic Sensitivity :7: reacts slowly with moisture/water
BRN :605759
Stability :Stable. Incompatible with strong oxidizing agents, strong acids, acid chlorides, strong bases. May decompose on exposure to moisture. Combustible.
InChIKey :MJUJXFBTEFXVKU-UHFFFAOYSA-N
LogP :-0.15
CAS DataBase Reference :762-04-9(CAS DataBase Reference)
NIST Chemistry Reference :Phosphonic acid, diethyl ester(762-04-9)
EPA Substance Registry System :Diethyl phosphite (762-04-9)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention.