Tetracyanoethylene Oxide
Also known as: Oxiranetetracarbonitrile, 2,2,3,3-Tetracyanooxirane, TCNEO, Oxirane-2,2,3,3-tetracarbonitrile, Tetracyanooxirane, 2,2,3,3-Oxiranetetracarbonitrile
Tetracyanoethylene Oxide (CAS 3189-43-3) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C6N4O and a molecular weight of 144.090 g/mol. Key properties include a melting point of 176-179ºC, a boiling point of 644.0±55.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 292.9±24.4 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3189-43-3
- Jingsj CID
- J-21952-9
- Molecular Formula
- C6N4O
- Molecular Weight
- 144.090 g/mol
- Category
- Ethers
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 176-179ºC |
|---|---|
| Boiling Point | 644.0±55.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 292.9±24.4 °C |
| Exact Mass | 144.007217 |
| PSA | 107.69000 |
| LogP | 0.06 |
| Vapor Pressure | 0.0±1.9 mmHg at 25°C |
| Refractive Index | 1.550 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
Customs & Trade Information
| HS Code | 2926909090 |
|---|---|
| Summary | HS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Tetracyanoethylene Oxide?
The CAS number of Tetracyanoethylene Oxide is 3189-43-3.
What are the molecular formula and molecular weight of Tetracyanoethylene Oxide?
Tetracyanoethylene Oxide has molecular formula C6N4O and molecular weight 144.090 g/mol.
Is Tetracyanoethylene Oxide hazardous?
Tetracyanoethylene Oxide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of Tetracyanoethylene Oxide?
For Tetracyanoethylene Oxide, Upstream Products: Tetracyanoethylene, Iodosobenzene, ozone; Downstream Products: Diphenyl sulfoxide, Diphenyl sulfide, Dimethyl sulfoxide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetracyanoethylene Oxide (CAS 3189-43-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21952-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.