High borosilicate glass is particularly excellent in high temperature resistance, high chemical stability, and low expansion rate, so it is widely used in pharmaceutical packaging, craft jewelry, drinking water containers and other product industries. The coefficient of thermal expansion of high borosilicate glass is (3.3 ± 0.1) × 10-6 / K. It is also called “borosilicate glass 3.3. The main component of high borosilicate glass is boron: 12.5 ~ 13.5%. The content is 78 ~ 80%, so the high borosilicate glass has excellent acid resistance and alkali resistance. The strain temperature difference of high borosilicate is 520 ° C. Therefore, high borosilicate does not contain poisonous substances, and the High temperature and acid resistance make high borosilicate difficult to precipitate harmful substances to human body in daily drinking water use.
However, when choosing a high borosilicate glass, try to choose a glass manufactured by a regular manufacturer.