FIELD: glass industry. SUBSTANCE: glass has, wt.-%: silicon oxide ( SiO2 ) 51.1-56.8; lithium oxide Li2O 5-20; sodium oxide Na2O 5-20; titanium oxide TiO2 15-19; tin oxide SnO2 1-3; antimony oxide Sb2O3 0.2-0.4. Range of refraction index is from +300 to -285·10-4, increment of refraction index is ± (14-17)·10-4(мол.%)-1 at ion exchange, Young's modulus is (870-977)·108H/m2. Glass is used for making of optical and acoustic members. EFFECT: enhanced quality of glass. 3 tbl
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