4-Ethynylphenyl ether

Also known as: 1-ethynyl-4-(4-ethynylphenoxy)benzene, 4,4'-Oxybis(ethynylbenzene), 4,4'-Diethynyldiphenyl ether, Bis(p-ethynylphenyl) ether, Benzene, 1,1'-oxybis[4-ethynyl-, p,p'-Diethynyldiphenyl ether, 4-Ethynylphenyl ether

4-Ethynylphenyl ether (CAS 21368-80-9) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C16H10O and a molecular weight of 218.25000 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21368-80-9
Jingsj CID: J-1522299-0
Molecular Formula: C₁₆H₁₀O
Molecular Weight: 218.25000 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	218.07300
PSA	9.23000
LogP	3.44150

Customs & Trade Information

HS Code	2902909090
Summary	2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Ethynylphenyl ether?

The CAS number of 4-Ethynylphenyl ether is 21368-80-9.

What are the molecular formula and molecular weight of 4-Ethynylphenyl ether?

4-Ethynylphenyl ether has molecular formula C16H10O and molecular weight 218.25000 g/mol.

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. "4-Ethynylphenyl ether (CAS 21368-80-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1522299-0 (accessed 2026-11-07).

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