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  • 1 ‘Blachownia’ Institute of Heavy Organic Synthesis 47-225 Kędzierzyn-Koźle Poland
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Mixtures of trimethylolpropane (TMP) or pentaerythritol (PER) with sodium or calcium formate (SF or CF) were investigated all over their composition range. Complete additivity was found to occur in the case of the TMP-SF and TMP-CF systems which renders it possible to determine the contents of both TMP and the given formate from in-dependent signals of weight loss over the entire range of quantitative composition of the mixtures under investigation. Additivity was found not to occur in the PER-SF system in the entire range of quantitative composition; SF content could only be determined from the ash weight. In the PER-CF system, additivity was absent at some signals; CF content could be determined in the full range from three independent signals, PER could be determined independently only at its content up to 50% by weight.

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