Diphenylborinic anhydride

Also known as: 1,1,3,3-Tetraphenyldiboroxane, Diphenylboronic anhydride, MFCD00042663, Oxybis(diphenylborane), Tetraphenyldiborinic anhydride, Tetraphenyldiboron oxide, Tetraphenyldiboroxane, Tetraphenyldiboroxide, diphenylboranyloxy(diphenyl)borane, diphenylborinic acid anhydride, diphenylboronic acid anhydride

Diphenylborinic anhydride (CAS 4426-21-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C24H20B2O and a molecular weight of 346.03700 g/mol. Key properties include a melting point of 135-140ºC(lit.), a boiling point of 463ºC at 760 mmHg, a density of 1.08g/cm3 and a flash point of 233.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4426-21-5
Jingsj CID: J-1085385-7
Molecular Formula: C₂₄H₂₀B₂O
Molecular Weight: 346.03700 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	135-140ºC(lit.)
Boiling Point	463ºC at 760 mmHg
Density	1.08g/cm3
Flash Point	233.8ºC
Exact Mass	346.17000
PSA	9.23000
LogP	2.61480
Refractive Index	1.601

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Diphenylborinic anhydride?

The CAS number of Diphenylborinic anhydride is 4426-21-5.

What are the molecular formula and molecular weight of Diphenylborinic anhydride?

Diphenylborinic anhydride has molecular formula C24H20B2O and molecular weight 346.03700 g/mol.

What are the upstream and downstream products of Diphenylborinic anhydride?

For Diphenylborinic anhydride, Upstream Products: Triphenylbismuth, Neopentyl glycol, 2-Aminoethyl Diphenylborinate; Downstream Products: 2-Aminoethyl Diphenylborinate, 1,1-Diphenylethane, 2-Benzylphenol.

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. "Diphenylborinic anhydride (CAS 4426-21-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1085385-7 (accessed 2026-11-09).

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