2511-19-5 Usage
Description
DIMETHYL ETHYLPHOSPHONITE, also known as DMPO, is a colorless liquid chemical compound with the molecular formula C4H11O2P. It is primarily used as a solvent and a precursor in the synthesis of organophosphorus compounds, playing a significant role in various industrial applications due to its unique properties.
Uses
Used in Chemical Synthesis:
DIMETHYL ETHYLPHOSPHONITE is used as a precursor in the synthesis of organophosphorus compounds for [reason for its use in synthesis, e.g., its ability to form stable intermediates or its reactivity with certain types of compounds].
Used in Epoxy Resin Manufacturing:
DIMETHYL ETHYLPHOSPHONITE is used as a reactive diluent in the manufacturing of epoxy resins for [reason for its use, e.g., to improve the flow properties or to lower the viscosity of the resin].
Used as a Flame Retardant Additive:
In the Plastics and Polymers Industry, DIMETHYL ETHYLPHOSPHONITE is used as a flame retardant additive to enhance the fire resistance of materials for [reason for its use, e.g., its ability to char and form a protective layer during combustion].
Used as a Stabilizer in Organic Peroxide Formulations:
DIMETHYL ETHYLPHOSPHONITE is used as a stabilizer in organic peroxide formulations to prevent premature decomposition and ensure safe handling and storage for [reason for its use, e.g., its ability to control the reaction kinetics and prevent runaway reactions].
Safety Precautions:
Due to its toxicity when ingested or inhaled, and its potential to cause irritation to the eyes, skin, and respiratory system, DIMETHYL ETHYLPHOSPHONITE requires careful handling and storage in a well-ventilated area. Appropriate safety precautions, including the use of personal protective equipment, should be employed when working with this chemical.
Check Digit Verification of cas no
The CAS Registry Mumber 2511-19-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,1 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2511-19:
(6*2)+(5*5)+(4*1)+(3*1)+(2*1)+(1*9)=55
55 % 10 = 5
So 2511-19-5 is a valid CAS Registry Number.
InChI:InChI=1/C4H11O2P/c1-4-6-7(2,3)5/h4H2,1-3H3
2511-19-5Relevant articles and documents
Nucleophilic displacement on 4-nitrophenyl dimethyl phosphinate by ethoxide ion: Alkali metal ion catalysis and mechanism
Buncel, Erwin,Albright, Kendall G.,Onyido, Ikenna
, p. 601 - 610 (2007/10/03)
We report on a spectrophotometric kinetic study of the effect of Li + and K- cations on the ethanolysis of 4-nitrophenyl dimethylphosphinate (4a) in ethanol at 25°C. The nucleophilic displacement reaction of 4a with LiOEt and KOEt in the absence and presence of 18-crown-6 ether (18-C-6) furnished observed first-order rate constants which increase in the order EtO-MOEt. Derived δG ip, δGts and ΔGcat values quantify ground state and transition state stabilization by the metal ions to give δGtn>δGip for Li+ and δGts~δGip for K+. These results indicate moderate catalysis by Li+, with 4a manifesting lesser susceptibility to catalysis than other substrates previously studied. Second-order rate constants for the reaction of the aryl dimethylphosphinates 4a-f with free EtO- were obtained from plots of log kobs vs. [KOEt], measured in the presence of excess 18-C-6. Hammett plots with σ and σ° substituent constants give significantly better correlation of rates than σ- and yield a moderately large ρ(ρ°) value; this is interpreted in terms of a stepwise mechanism involving rate-limiting formation of a pentacoordinate intermediate. Comparison of the present results with those of Williams on the aqueous alkaline hydrolysis of Me2P(O)-OPhX and Ph2P(O)-OPhX esters, establishes the rationale for a change in mechanism in the more basic EtO/EtOH nucleophile/solvent system by a stepwise mechanism instead of a concerted one in aqueous base. Structure-reactivity correlations following Jencks show that the change in mechanism is accounted for by cross interactions between the nucleophile and the leaving group in the transition state. The observed duality of mechanism is rationalized on the basis of the More O'Ferrall-Jencks diagram, as a spectrum of transition states covering a wide range of nucleophile and leaving group basicities.