Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt

二水合双(对-磺酰苯基)苯基膦化二钾盐

Also known as: 4,4'-(Phenylphosphinidene)bis-benzenesulfonic acid dipotassium salt, 4-[phenyl-(4-sulfonatophenyl)phosphanyl]benzenesulfonate;hydrate;dipotassium, K2BSPP, Bis(p-sulfonatophenyl)phenylphosphine dipotassium salt dihydrate

Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt (CAS 151888-20-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H17K2O8PS2 and a molecular weight of 534.62300 g/mol. It is also known as 4,4'-(Phenylphosphinidene)bis-benzenesulfonic acid dipotassium salt, 4-[phenyl-(4-sulfonatophenyl)phosphanyl]benzenesulfonate;hydrate;dipotassium and K2BSPP. Key property: a melting point of 98-102ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
151888-20-9
Jingsj CID
J-11318-4
Molecular Formula
C18H17K2O8PS2
Chinese Name
二水合双(对-磺酰苯基)苯基膦化二钾盐
Molecular Weight
534.62300 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point98-102ºC

Frequently Asked Questions

What is the CAS number of Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt?

The CAS number of Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt is 151888-20-9.

What are the molecular formula and molecular weight of Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt?

Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt has molecular formula C18H17K2O8PS2 and molecular weight 534.62300 g/mol.

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

Last updated:

How to cite: Jingsj. "Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt (CAS 151888-20-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11318-4 (accessed 2026-10-23).

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