diethyl methylphosphonate（CAS# 683-08-9)
| Hazard Symbols | Xi – Irritant |
| Risk Codes | 36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | 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 |
Introduction
Diethyl methyl phosphate (also known as diethyl methyl phosphophosphate, abbreviated as MOP (Methyl-ortho-phosphoricdiethylester)) is an organophosphate compound. The following is an introduction to its nature, use, manufacturing methods and safety information:
Quality:
Appearance: colorless or yellowish liquid;
Solubility: soluble in organic solvents such as water, alcohol and ether;
Use:
Diethyl methyl phosphate is mainly used as a catalyst and solvent in organic synthesis reactions;
It acts as a transesterifier in some esterification, sulfonation, and etherification reactions;
Diethyl methyl phosphate can also be used in the preparation of some plant protection agents.
Method:
The preparation of diethyl methyl phosphate can be obtained by the reaction of diethanol and trimethyl phosphate. The specific preparation method is as follows:
(CH3O)3PO + 2C2H5OH → (CH3O)2POOC2H5 + CH3OH
Safety Information:
Diethyl methyl phosphate should be avoided from contact with strong oxidants and strong acids to avoid dangerous reactions;
When using or storing diethyl methyl phosphate, care should be taken to keep away from heat sources and open flames to ensure a well-ventilated environment.
