20544-37-0

Basic information

• Product Name: 3,9-dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide
• Synonyms: 3,9-dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide;2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(phenylmethyl)-,3,9-dioxide;2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis(phenylmethyl)-, 3,9-dioxide;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]undecane3,9-dioxide;Einecs 243-869-3
• CAS NO: 20544-37-0
• Molecular Formula: C19H22O6P2
• Molecular Weight: 408.321902
• EINECS: 243-869-3
• Mol File: 20544-37-0.mol
• Article Data: 5

Chemical Properties

• Melting Point: 257 °C
• Boiling Point: 576.5°Cat760mmHg
• Flash Point: 315.3°C
• Appearance: /
• Density: 1.34g/cm³
• Vapor Pressure: 1.08E-12mmHg at 25°C
• Refractive Index: 1.575
• Water Solubility: 30.9mg/L at 20℃
• CAS DataBase Reference: 3,9-dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide(CAS DataBase Reference)
• NIST Chemistry Reference: 3,9-dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide(20544-37-0)
• EPA Substance Registry System: 3,9-dibenzyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide(20544-37-0)

Safety Data

• Hazardous Substances Data: 20544-37-0(Hazardous Substances Data)

Usage

Flammability and Explosibility

Notclassified

InChI:InChI=1/C19H22O6P2/c20-26(11-17-7-3-1-4-8-17)22-13-19(14-23-26)15-24-27(21,25-16-19)12-18-9-5-2-6-10-18/h1-10H,11-16H2

Upstream product

• 115-77-5 Pentaerythritol 
• 100-51-6 benzyl alcohol 
• 100-39-0 benzyl bromide 

Relevant articles and documents

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PROCESS FOR THE PRODUCTION OF PENTAERYTHRITOL DIPHOSPHONATES

A process for producing a pentaerythritol diphosphonate represented by the formula (5) characterized by (A) reacting phosphorus trichloride with pentaerythritol in the presence of an inert solvent to obtain pentaerythritol dichlorophosphite (reaction (a)), (B) reacting the pentaerythritol dichlorophosphite with an aralkyl alcohol to obtain a pentaerythritol diphosphite (reaction (b)), and (C) heat-treating the pentaerythritol diphosphite in the presence of a halogenated compound on the condition of a temperature of from 80 to 300°C (reaction (c)): wherein Ar1 and Ar2, which may be the same as or different from each other, each represents a substituted or unsubstituted aryl group having from 6 to 20 carbon atoms, and R3, R4, R5 and R 6 which may be the same as or different from each other, each represents a hydrogen atom, a substituted or unsubstituted aryl group having from 6 to 20 carbon atoms, or a saturated or unsaturated hydrocarbon group having from 1 to 20 carbon atoms. According to the production process of the invention, a particular pentaerythritol diphosphonate capable of being utilized as a fire retarding agent and the like can be provided with high purity and high yield by an industrially advantageous process excellent in productivity.