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683-08-9

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Identification

Name
Diethyl methylphosphonate
CAS
683-08-9
Synonyms
AURORA KA-1413
DIETHYL METHANEPHOSPHONATE
DIETHYL METHYLPHOSPHONATE
METHYLPHOSPHONIC ACID DIETHYL ESTER
DEMP
Diethoxymethylphosphine oxide
diethylmethanephosphate
methyl-phosphonicacidiethylester
o,o-Diethyl methylphosphonate
Phosphonic acid, methyl-, diethyl ester
Phosphonicacid,methyl-,diethylester
Diethyl methanephosphonate, 98+%
Diethylmethylphosphonate,97%
DIETHYL METHANEPHOSPONATE
Diethylmethylphosphonate, 98 %
Diethyl methylphosphonate: (DEMP)
1-(Ethoxy-methylphosphoryl)oxyethane
Methylphosphonic acid diethyl
EINECS(EC#)
211-667-4
Molecular Formula
C5H13O3P
MDL Number
MFCD00009813
Molecular Weight
152.13
MOL File
683-08-9.mol

Chemical Properties

Appearance
clear colorless liquid
Boiling point 
194 °C(lit.)

bp 
194 °C(lit.)

density 
1.041 g/mL at 25 °C(lit.)

refractive index 
n20/D 1.414(lit.)

Fp 
168 °F

form 
Liquid
color 
Clear colorless to pale yellow
Water Solubility 
Miscible with water.
BRN 
1753416
CAS DataBase Reference
683-08-9(CAS DataBase Reference)
NIST Chemistry Reference
Diethyl methanephosphonate(683-08-9)

Safety Data

Hazard Codes 
Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
WGK Germany 
3

RTECS 
SZ9085000

HS Code 
29310095

Material Safety Data Sheet(MSDS)

Hazard Information

Chemical Properties
clear colorless liquid
Uses
Diethyl methylphosphonate is used as a precursor for the synthesis of gem-difluroalkenyphosphonate via reaction with alpha-trifluromethylstyrene. It is also used in the synthesis of phosphonylated peptides, fluoroalkyl alpha- and beta-aminophosphonates, pyridone alkaloids with neuritogenic activity and lipophilic meropenem-derived prodrugs.

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