Tetraethyl pyrophosphite
四乙基焦亚磷酸盐
Also known as: Bis(diethoxyphosphino) ether, Bis(phosphorous acid diethyl)anhydride, Diphosphorous acid tetraethyl ester, Oxybis(diethoxyphosphine), Oxybis(phosphonous acid diethyl) ester, diethoxyphosphanyl diethyl phosphite, tetraethyldiphosphite
- CAS No.
- 21646-99-1
- Jingsj CID
- J-1993530-0
- Molecular Formula
- C8H20O5P2
- Chinese Name
- 四乙基焦亚磷酸盐
- Molecular Weight
- 258.18900 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Boiling Point | 237.9ºC at 760mmHg |
|---|---|
| Density | 1.057 g/mL at 25 °C(lit.) |
| Flash Point | 115.2ºC |
GHS Safety & Compliance
IrritantSignal word: Warning
Frequently Asked Questions
What is the CAS number of Tetraethyl pyrophosphite?
21646-99-1
What are the molecular formula and molecular weight of Tetraethyl pyrophosphite?
C8H20O5P2, molecular weight 258.18900 g/mol
Is Tetraethyl pyrophosphite hazardous?
Warning
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026