We know that glass is generally regarded as the healthiest drinking water container because of its stability and transparency, but many people think that high borosilicate glass will precipitate lead at high temperature, and lead is a toxic substance.
High borosilicate glass has excellent high temperature resistance, high chemical stability and low expansion rate, so it is widely used in pharmaceutical packaging, craft ornaments, drinking water containers and other product industries.
Because of its linear thermal expansion coefficient, high borosilicate glass has an expansion coefficient of (3.3 × 1) × 00-6/k, also known as "borosilicate glass 3.3". The main component of high borosilicate glass is boron: 12.5~ 13.5%, and the silicon content is 78~80%, so the acid and alkali resistance of high borosilicate glass is also excellent, and the strain temperature difference of high borosilicate glass is 520℃.
Therefore, high borosilicate does not contain toxic substances, and its high temperature resistance and acid resistance make it difficult for high borosilicate to precipitate harmful substances in daily drinking water use. We need to pay attention to that it is made of lead oxide and silicon, because the glass will be heavier, more textured and more thorough after adding lead.
Because the price of lead is relatively high, crystal glass is often used to make some craft glass products. Or high-end wine glasses. Ordinary glass products are mostly made of high boron silicon. When choosing high borosilicate glass, try to choose the glass produced by regular manufacturers. There are not many high-grade glasses that can be made from high borosilicate glass used in the market.