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15171-48-9 Usage


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.

Check Digit Verification of cas no

The CAS Registry Mumber 15171-48-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,1,7 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 15171-48:
89 % 10 = 9
So 15171-48-9 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017


1.1 GHS Product identifier

Product name 2-methyl-2-oxo-1,2λ<sup>5</sup>-oxaphospholan-5-one

1.2 Other means of identification

Product number -
Other names 2-methyl-1,2-oxaphosphinolan-5-one-2-oxide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:15171-48-9 SDS

15171-48-9Relevant articles and documents

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


Page/Page column 9, (2011/05/13)

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


, (2008/06/13)

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.

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