Tetraethyl orthocarbonate
Also known as: Tetraethoxymethane, Orthocarbonic acid tetraethyl ester, 1-(Triethoxymethoxy)ethane, Ethane, 1,1',1'',1'''-(methanetetrayltetrakis(oxy))tetrakis-, MFCD00009221, Tetraethyl orthocarbonate
Tetraethyl orthocarbonate (CAS 78-09-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H20O4 and a molecular weight of 192.253 g/mol. Key properties include a boiling point of 159.5±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 52.8±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 78-09-1
- Jingsj CID
- J-1527258-9
- Molecular Formula
- C9H20O4
- Molecular Weight
- 192.253 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Boiling Point | 159.5±0.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 52.8±0.0 °C |
| Exact Mass | 192.136154 |
| LogP | 4.68 |
| Vapor Pressure | 3.2±0.2 mmHg at 25°C |
| Refractive Index | 1.415 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
Frequently Asked Questions
What is the CAS number of Tetraethyl orthocarbonate?
The CAS number of Tetraethyl orthocarbonate is 78-09-1.
What are the molecular formula and molecular weight of Tetraethyl orthocarbonate?
Tetraethyl orthocarbonate has molecular formula C9H20O4 and molecular weight 192.253 g/mol.
Is Tetraethyl orthocarbonate hazardous?
Tetraethyl orthocarbonate has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetraethyl orthocarbonate (CAS 78-09-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1527258-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.