3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide

3,9-双(苯基甲基)-2,4,8,10-四氧杂-3,9-二磷杂螺[5.5]十一烷-3,9-二氧化物

Also known as: 2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(phenylmethyl)-, 3,9-dioxide, 3,9-Bis(phenylmethyl)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide, 3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide, 3,9-dibenzyl-2,4,8,10-tetraoxa-3λ^{5},9λ^{5}-diphosphaspiro[5.5]undecane 3,9-dioxide, EINECS 243-869-3

3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide (CAS 20544-37-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C19H22O6P2 and a molecular weight of 408.32200 g/mol. It is also known as 2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(phenylmethyl)-, 3,9-dioxide, 3,9-Bis(phenylmethyl)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide and 3,9-dibenzyl-2,4,8,10-tetraoxa-3λ^{5},9λ^{5}-diphosphaspiro[5.5]undecane 3,9-dioxide. Key properties include a boiling point of 576.5ºC at 760mmHg, a density of 1.34g/cm3 and a flash point of 315.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20544-37-0
Jingsj CID
J-1920834-7
Molecular Formula
C19H22O6P2
Chinese Name
3,9-双(苯基甲基)-2,4,8,10-四氧杂-3,9-二磷杂螺[5.5]十一烷-3,9-二氧化物
Molecular Weight
408.32200 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point576.5ºC at 760mmHg
Density1.34g/cm3
Flash Point315.3ºC

Frequently Asked Questions

What is the CAS number of 3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide?

The CAS number of 3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide is 20544-37-0.

What are the molecular formula and molecular weight of 3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide?

3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide has molecular formula C19H22O6P2 and molecular weight 408.32200 g/mol.

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

Last updated:

How to cite: Jingsj. "3,9-Dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide (CAS 20544-37-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1920834-7 (accessed 2026-10-25).

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