Phase equilibria and solubility have been studied by the visual polythermal method in mixtures of components along a series of sections of the composition triangle within the temperature range of 10–60°C in the ternary systems lithium carbonate – water – diisopropylamine (triethylamine). For each system, the temperatures of formation of the critical node of the monotectic state have been determined: in the system with triethylamine, it is 14.0°C, and with diisopropylamine, it is 22.4°C.
