1,1,3,3-Tetrafluorodimethyl ether

Also known as: Bis(difluoromethyl) ether, (Difluoromethoxy)(difluoro)methane, R E 134, TETRAFLUORODIMETHYL ETHER, Methane, 1,1'-oxybis[1,1-difluoro-, HFE 134, HFOC 134, R-E 134

1,1,3,3-Tetrafluorodimethyl ether (CAS 1691-17-4) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C2H2F4O and a molecular weight of 118.03000 g/mol. Key properties include a melting point of -107ºC, a boiling point of 4,7ºC and a density of 1.304g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1691-17-4
Jingsj CID: J-1152909-7
Molecular Formula: C₂H₂F₄O
Molecular Weight: 118.03000 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-107ºC
Boiling Point	4,7ºC
Density	1.304g/cm3
Exact Mass	118.00400
PSA	9.23000
LogP	1.44820
Vapor Pressure	5550mmHg at 25°C
Refractive Index	1.237

Customs & Trade Information

HS Code	2909199090
Summary	2909199090. other acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,1,3,3-Tetrafluorodimethyl ether?

The CAS number of 1,1,3,3-Tetrafluorodimethyl ether is 1691-17-4.

What are the molecular formula and molecular weight of 1,1,3,3-Tetrafluorodimethyl ether?

1,1,3,3-Tetrafluorodimethyl ether has molecular formula C2H2F4O and molecular weight 118.03000 g/mol.

What are the upstream and downstream products of 1,1,3,3-Tetrafluorodimethyl ether?

For 1,1,3,3-Tetrafluorodimethyl ether, Upstream Products: Dimethyl ether.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,1,3,3-Tetrafluorodimethyl ether (CAS 1691-17-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1152909-7 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.