FIELD: analytical methods.
SUBSTANCE: invention, in particular, relates to determining mass percentage of basic substance of monoester mixture: methylphosphonic acid isopropyl ester, pinacolin ester, and isobutyl ester by titration in presence of chemical indicators. Method is characterized by analyzing aqueous solutions methylphosphonic acid monoesters by treating sample with excess of 0.1 N sodium hydroxide solution, after which sample is kept for 30 min and then titrated with 0.1 N aqueous hydrochloric acid solution in presence of bromthymol blue indicator until color of solution changes from blue to yellow-green. Under similar conditions, control experiment is carried out and in both cases volume of consumed 0.1 N HCl is registered to determine mass percentage of basic substance.
EFFECT: simplified analytical procedure and increased accuracy of analysis.
3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINING MASS PORTION OF MAJOR SUBSTANCE OF ALKYLPHOSPHONIC ACID DIALKYL ESTERS | 2006 |
|
RU2320989C1 |
| METHOD OF O-ALKYLMETHYLPHOSPHONATE ANALYSIS FOR MASS FRACTION OF GROUND SUBSTANCE | 2008 |
|
RU2354661C1 |
| METHOD OF DETERMINING WEIGHT PART OF MAIN SUBSTANCE OF METHYLPHOSPHONIC ACID BY TITRIMETRIC METHOD | 2007 |
|
RU2365914C2 |
| GAS CHROMATOGRAPHIC METHOD FOR QUANTITATIVE DETERMNATION OF ORGANOPHOSPHORUS TOXIC SUBSTANCES USING DIALKYL ESTERS OF METHYL-PHOSPHORIC ACID AS INTERNAL STANDARD | 2008 |
|
RU2408010C2 |
| TITRIMETRIC METHOD FOR DETERMINING TOTAL MASS FRACTION OF BASIC SUBSTANCE IN STATE STANDARD SAMPLE OF COMPOSITION WITH 2-CHLOROVINYLARSINEOXIDE | 2008 |
|
RU2360243C1 |
| METHOD FOR SALVAGING OF TOXIC PHOSPHOROUS-CONTAINING ORGANIC COMPOUNDS | 2001 |
|
RU2203117C2 |
| METHOD FOR DETECTING MICROQUANTITIES OF DIISOPROPYL ETHER OF ACID FLUORIDE OF METHYL PHOSPHONIC ACID IN SOIL | 2001 |
|
RU2213349C2 |
| METHOD FOR TITRIMETRIC DETERMINATION OF WEIGHT RATIO OF BASIC SUBSTANCE IN STANDARD SAMPLE WITH COMPOSITION β,β'-DIHYDROXY DIETHYL SULPHIDE | 2011 |
|
RU2453838C1 |
| IMMOBILISED BACTERIA CELLS BIOCATALYST FOR DECOMPOSITION OF METHYLPHOSPHONIC ACID AND ITS ESTERS | 2007 |
|
RU2360967C1 |
| TITROMETRIC METHOD FOR DETERMINING MASS PORTION OF MAJOR SUBSTANCE OF BETA-CHLOROVINYLARSONIC ACID | 2006 |
|
RU2320988C1 |
