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- W197916455 abstract "In order to reduce the solubility of lanthanum fluoride and to improve the precision of fluorine determination, (ILLEGIBLE) recommend (ILLEGIBLE) organic solvents (ethanol, acetone, etc.) to the titrated solution. It is shown that fluoride can be determined in the presence of antimony without preparation only when all antimony is present in the tervalent state. The results obtained in the determination of fluoride ion in synthetic mixtures at a fluorine:antimony molar ratio of 2, which approximates the composition of the antimony catalyst, are shown in tables. It can be seen that hydrobromic acid is the only suitable of the agents tested, whereby its concentration in the analyzed sample must not be less than 7.6. The relatively high reproducibility of the proposed procedure allows the authors to recommend it for the determination of fluorine in antimony catalysts or other analogous compositions when fluorine and pentavalent antimony are present simultaneously." @default.
- W197916455 created "2016-06-24" @default.
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- W197916455 date "1986-08-01" @default.
- W197916455 modified "2023-09-23" @default.
- W197916455 title "Determination of fluorine in antimony catalysts for the liquid-phase production of freons" @default.
- W197916455 hasPublicationYear "1986" @default.
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