The secondary tartaric products (STP) represent an importance for the obtaining of the tartaric acid (TA) and some derivates with specific properties that can not be obtained via synthetic way. The reserves of raw material for the obtaining of TA in the Republic of Moldova are great. During the processing of 600000 t of grapes, we obtain a certain quantity of STP, from which result the following quantities of TA: from the pulp – 156000kg, from tartaric yeast – 200000kg, from the grain stillage – 90000 kg. Annually, 446 t of TA are obtained. The main purpose of this research paper consists in the assimilation of tartaric wastes, the optimization of the technologies and physical-chemical parameters for the obtaining of some precious products, as TA, the dihydroxyfumaric esters of TA. The experimental study includes the optimization of various procedures of TA obtaining from the grain stillage: the classical methods together with the new methods. In this context, we studied the extraction of the TA via the method of the ionic switch with the solid and liquid anion exchangers (AH-2 ФН) / (Amberlith LA-2). In the result of the experimental studies the processes of reactive extraction of TA and its crystallization have been optimized. In order to extract 1kg of TA, it is necessary to have 1.2 liters of Amberlith LA-2 and 1 liter of butyl acetate. The TA crystallization in a porous medium has been effected by the distillation of azeotropic mixture. For the optimization of the process of crystallization, various azeotropic mixtures were used: water-xylene; water- butanol; water-butyl acetate; water-toluene. We came to the conclusion that the highest efficiency of TA crystallization was obtained at the distillation of azeotropic mixture of water-xylene. But, because the xylene has certain toxic properties, azeotropic mixtures of water- butanol or water-toluene are recommended for the TA crystallization.For the purpose of obtaining certain TA derivates, the method of catalytic oxidation of the TA and the dihydroxyfumaric is used. The scientific researches are of great importance, because respecting the principle of lasting development, thus the use of some non pollutive technologies, we would diminish the process of polluting of the surrounding world and as a result of STP application, we would obtain precious products that could be used in various domains.