15171-48-9

Basic information

• Product Name: 2-METHYL-1,2-OXAPHOSPHOLAN-5-ONE 2-OXIDE
• Synonyms: 2-METHYL-1,2-OXAPHOSPHOLAN-5-ONE 2-OXIDE;2-Methyl-1,2-oxaphospholane 5-one 2-oxide;2-Methyl-1,2-oxaphospholane-5-one 2-oxide;2-Methyl-5-oxo-1,2-oxaphospholane 2-oxide;Einecs 239-225-6;2-Methyl-1-oxa-2,5-dioxo-2-phospholane;Exolit PE 110;Exolit PR 110
• CAS NO: 15171-48-9
• Molecular Formula: C₄H₇O₃P
• Molecular Weight: 134.07
• EINECS: 239-225-6
• Product Categories: New phosphonium flame-retardant agents
• Mol File: 15171-48-9.mol
• Article Data: 4

Chemical Properties

• Melting Point: 97-98℃
• Boiling Point: 192℃
• Flash Point: 84℃
• Appearance: /
• Density: 1.26
• Vapor Pressure: 0.511mmHg at 25°C
• Refractive Index: 1.426
• CAS DataBase Reference: 2-METHYL-1,2-OXAPHOSPHOLAN-5-ONE 2-OXIDE(CAS DataBase Reference)
• NIST Chemistry Reference: 2-METHYL-1,2-OXAPHOSPHOLAN-5-ONE 2-OXIDE(15171-48-9)
• EPA Substance Registry System: 2-METHYL-1,2-OXAPHOSPHOLAN-5-ONE 2-OXIDE(15171-48-9)

Safety Data

• Hazardous Substances Data: 15171-48-9(Hazardous Substances Data)

Usage

Uses

2-Methyl-1,2-oxaphospholan-5-one 2-oxide is a fireproofing agent, it can also be used as a building block for organic synthesis.

InChI:InChI=1/C4H7O3P/c1-8(6)3-2-4(5)7-8/h2-3H2,1H3

Upstream product

• 676-83-5 methyldichlorophosphane 
• 79-10-7 acrylic acid 
• 125750-80-3 dichloro-methyl-phosphane 

Downstream Products

• 15208-84-1 (2-Phenylcarbamoyl-ethyl)-methyl-phosphinsaeure 
• 625-36-5 2-chloropropionyl chloride 
• 15090-23-0 2-carboxyethyl-methyl-phosphinic acid 

Relevant articles and documents

Salt of carboxyethyl phosphinate ester and flame retardant thermoplastic resin composition containing the same

A composition includes a salt of a carboxyethyl phosphinate ester compound. Additionally, the composition may also include a polymeric resin, such as a thermoplastic resin. The composition may have improved physical and chemical properties including flame retardancy, thermal stability, and hygroscopicity.

Process for the simultaneous preparation of 2,5-dioxo-1,2-oxa-phospholanes and β-halogenpropionic acid halide

2,5-Dioxo-1,2-oxa-phospholanes of the formula (I) STR1 wherein R1 is an organic radical and R2 and R3 each also represents an organic radical or hydrogen, are prepared by reacting 2-haloformylethyl-phosphinic acid halides of the formula (II) STR2 wherein R1, R2 and R3 are defined as in formula (I) and X means Cl or Br, preferably Cl, with an approximatey equimolar quantity of acrylic acid. The compounds (II) may also be produced in the reaction batch and in situ by reacting about equimolar quantities of a dihalophosphine of the formula (III) STR3 with an α,β-unsaturated acid (IV) In the formulae (III) and (IV) R1, R2, R3 and X are defined as indicated above. In the reaction there is formed, in addition to the compounds (I), practically exclusively β-halopropionic acid and no free hydrogen halide. The phospholanes (I) are valuable flame retarding agents for plastics, intermediates, for example, for the synthesis of biocidals etc.