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1,4-Bis(diphenylphosphino)butane

1,4-双(二苯膦基)丁烷

Also known as: Tetramethylenebis(diphenylphosphine), Butane-1,4-diylbis(diphenylphosphine), 1,4-Butanediylbis(diphenylphosphine), DPPB, 1,1'-(1,4-Butanediyl)bis[1,1-diphenylphosphine], Phosphine, 1,4-butanediylbis(diphenyl-

1,4-Bis(diphenylphosphino)butane (CAS 7688-25-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C28H28P2 and a molecular weight of 426.47 g/mol. It is also known as Tetramethylenebis(diphenylphosphine), Butane-1,4-diylbis(diphenylphosphine) and 1,4-Butanediylbis(diphenylphosphine). Key properties include a melting point of 132-136 °C(lit.), a boiling point of 542.0±33.0 °C at 760 mmHg and a flash point of 299.5±31.7 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7688-25-7
Jingsj CID
J-2417-4
Molecular Formula
C28H28P2
Chinese Name
1,4-双(二苯膦基)丁烷
Molecular Weight
426.47 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point132-136 °C(lit.)
Boiling Point542.0±33.0 °C at 760 mmHg
Flash Point299.5±31.7 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1,4-Bis(diphenylphosphino)butane?

The CAS number of 1,4-Bis(diphenylphosphino)butane is 7688-25-7.

What are the molecular formula and molecular weight of 1,4-Bis(diphenylphosphino)butane?

1,4-Bis(diphenylphosphino)butane has molecular formula C28H28P2 and molecular weight 426.47 g/mol.

Is 1,4-Bis(diphenylphosphino)butane hazardous?

1,4-Bis(diphenylphosphino)butane has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1,4-Bis(diphenylphosphino)butane (CAS 7688-25-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2417-4 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.