The nature of glass surface dealkalization by acid gases has been studied for about a hundred years. The least investigated factor is the way glass components influence the intensity of its dealkalization by acid gases [1].  The aim of the experiments was to elucidate the way chemical composition of industrial glasses of different purposes influences the intensity of their dealkalization by gaseous reagents. The composition of the samples used in the experiments is presented in the table.  For thermochemical treatment of glass samples, oxides of sulfur and nitrogen, difluorodichloromethane and difluorochloromethane, hydrogen fluoride and chloride, as well as mixtures of these gases were used. The experiments were carried out in laboratory and industrial conditions. Laboratory regimes of thermochemical treatment of glass samples with gaseous reagents are as follows: temperature - 550 ° C, quantity of gaseous reagent for one treatment is 1.00 mol, duration is 15 min. The main regimes of thermochemical treatment of hollow glassware with gaseous reagents on processing lines are the following: temperature - between 450 and 600 0С, volume of gaseous reagent per one glassware - between 0.05 and 10.0 ml, duration - between 1 s and 30 min. In our experiments, the intensity of dealkalization of inorganic glasses by acid gases is characterized by an extraction rate of Me + (Na +, K +, etc.) [2].  In laboratory conditions, assorted colorless transparent glass most intensively dealkalized under the influence of gaseous reagents, which is explained by a higher content of Na2O compared to other glasses (see table). The reaction of laboratory glass with gaseous agents is the least active, which can be explained by the following reasons: 1) the lowest content of Na2O, CaO and MgO in the glasses under investigation and 2) the highest content of B2O3 and SiO2, which weakens the extraction of Na+ from glass [1]. The study of dealkalization intensity of industrial glasses with gaseous reagents in the industrial conditions gave similar results.