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Application filed by Univ SofijskifiledCriticalUniv Sofijski
Priority to BG9492491ApriorityCriticalpatent/BG51552A1/en
Publication of BG51552A1publicationCriticalpatent/BG51552A1/en
Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means
(AREA)
Abstract
The indicator is used in analytical chemistry, and more particularly in pH determination. This method is not affected by the presence of CO2 during determination of the equivalent point, and can be used in both acidic and basic environments. The compound 3-cyano-4-[2-p-dimethylaminophenylethenyl]-coumarin as a 0.05 percent solution in dimethyl sulfoxide is used as an indicator.
Method for the quantitative determination of reductible or oxidizable compounds, particularly of peroxiacetic acid in a mixture of other oxidizing compounds.
Additive for diagnostic tests for determination of the coagulability of blood, method of reducing the influencing of diagnostic tests by heparin and the use of metal salts for these purposes