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Diethyl Phosphite
(CAS RN:762-04-9 Product Number:D0521)


Diethyl Phosphite
Synonym Diethyl Phosphonate
Synonym Phosphonic Acid Diethyl Ester
Synonym Phosphorous Acid Diethyl Ester

General Information

Product Number D0521 化審法:(2)-2001 第二種指定物質(原料物質)

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Purity/Analysis Method >98.0%(GC)(T)
Storage Temperature
M.F. / M.W. C4H11O3P=138.10
CAS RN 762-04-9
Related CAS RN
MDL Number MFCD00044573
Packaging and Container
  • Product Details
  • Safety & Regulations
  • Reference & Application


Purity(GC) min. 98.0 %
Purity(Neutralization titration) min. 98.0 %
Specific gravity (20/20) 1.0710 to 1.0760
Refractive index n20/D 1.4060 to 1.4090

Data of Reference

flp 90°C(lit.)
bp 188°C(lit.)


Beilstein 1,330
Reaxys-RN 605759
PubChem SID 125308989
F&F 2,132
RTECS# TG7875000


Signal Word Warning
Hazard Statements
  • H227
  • :Combustible liquid.
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P210
  • :Keep away from flames and hot surfaces. – No smoking.
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :If on skin: Wash with plenty of soap and water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.
  • P370+P378
  • :In case of fire: Use dry chemical, dry sand or foam to extinguish.
  • P403+P235
  • :Store in a well-ventilated place. Keep cool.
  • P501
  • :Dispose of contents and container in accordance with local, regional, national regulations (e.g. US: 40 CFR Part 261, EU:91/156/EEC, JP: Waste Disposal and Cleaning Act, etc.).

Compliance with laws, Regulations

Fire Defense Law 危-4-3-III
ENCS (2)-2001
Law on Prohibition of Chemical Weapons 第二種指定物質(原料物質)


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