DIETHYL ETHYLPHOSPHONATE

Synonym(s):Diethoxyethylphosphine oxide;NSC 2671

CAS NO.：78-38-6
Empirical Formula: C6H15O3P
Molecular Weight: 166.16
MDL number: MFCD00039888
EINECS: 201-111-9
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 03:30:39

What is DIETHYL ETHYLPHOSPHONATE?

Chemical properties

colourless liquid

The Uses of DIETHYL ETHYLPHOSPHONATE

Diethyl Ethylphosphonate can be used as a flame retardant, and also used as a general reagent in phosphinoalkene and phosphinoalkyne synthesis.

The Uses of DIETHYL ETHYLPHOSPHONATE

Diethyl ethylphosphonate is used for heavy-metal extraction and solvent separation. It is also used as a gasoline additive, antifoam agent, plasticizer and textile conditioner. Further, it serves as an antistatic agent, flame retardant and as a general reagent in phosphinoalkene and phosphinoalkyne synthesis.

General Description

Colorless liquid with a mild odor.

Air & Water Reactions

Slightly water soluble. May hydrolyze under acid or basic conditions .

Reactivity Profile

Organophosphates, such as DIETHYL ETHYLPHOSPHONATE, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.

Properties of DIETHYL ETHYLPHOSPHONATE

Boiling point:	82-83 °C (11 mmHg)
Density	1.024 g/mL at 20 °C(lit.)
vapor pressure	7.2hPa at 20℃
refractive index	n20/D 1.417
Flash point:	105°C
solubility	Chloroform (Soluble), Dichloromethane, Ethyl Acetate (Slightly)
form	Liquid
color	Clear colorless
Water Solubility	Miscible with alcohol, ether and organic solvents. Slightly miscible with water.
BRN	1756861
Dielectric constant	9.9（45℃）
Stability:	Stable, but hydrolyzes under both acidic and basic conditions. Incompatible with strong oxidizing agents.
CAS DataBase Reference	78-38-6(CAS DataBase Reference)
EPA Substance Registry System	Diethyl ethylphosphonate (78-38-6)

Safety information for DIETHYL ETHYLPHOSPHONATE

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07 Environment GHS09
GHS Hazard Statements	H302:Acute toxicity,oral H313:Acute toxicity,dermal H318:Serious eye damage/eye irritation H319:Serious eye damage/eye irritation H401:Hazardous to the aquatic environment, acute hazard H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention.