FIELD: chemistry.
SUBSTANCE: borosilicate glass contains (% w/w calculated as oxide): 70,5-<73 SiO2, 8-10 B2O3, 4-5,6 A12O3, 0-<0,5 Li2O, 7-9 Na2O, 1,2-2,5 K2O, 0-1 MgO, 0-2 CaO, and MgO+CaO 0-2, >2-4 BaO, 0-2 ZrO2, 0-1 CeO2, 0-0.6 F-. Technical goal of invention: to increase resistance to hydrolysis along with low working point.
EFFECT: glass thus obtained is specifically suitable for pharmaceutical purposes.
7 cl, 1 tbl
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