chemical properties    

SIMAX borosilicate glass 3.3 is highly resistant to water effects, neutral and acid solutions, heavy acids and their mixtures, to chlorine, bromine, iodine and organic compounds. Even in long-term effects and at temperatures above 100 °C, this glass outstrips with its chemical durability most metals and other raw materials.

Due to water and acid effects the glass releases small amounts only, mostly those of monovalent ions. At the same time, on the glass surface, there is formed a very thin, permeable siliceous gel layer, which ensures resistance to further effects. Hydrogen fluoride, hot phosphoric acid and alkaline solutions have an affect on the glass surface, depending on concentration and temperature.