FIELD: chemistry.;SUBSTANCE: invention relates to production of construction materials and may by used for coating of fireplace tile. Glase comprises in wt %: SiO2 - 42.3-49.5; SnO2 25.0-27.0; Al2O3 - 12.0-16.0; CaO - 1.0-1.5; MgO - 4.5-5.5; Na2O - 5.5-6.5; Cr2O3 - 1.5-2.0.;EFFECT: higher adhesion of glase to tile.;1 tbl
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机译：技术领域本发明涉及建筑材料的生产，并且可以用于壁炉砖的涂覆。玻璃以重量％计：SiO 2 -42.3-49.5; SnO 2 25.0-27.0; Al 2 O 3 -12.0-16.0;氧化钙-1.0-1.5;氧化镁-4.5-5.5; Na 2 O-5.5-6.5; Cr 2 O 3 -1.5-2.0 .;效果：玻璃与瓷砖的附着力更高; 1 tbl
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