However, although glass contains no chemicals and is easy to clean, users can easily burn themselves because of the strong thermal conductivity of glass materials. If the water temperature is too high, the glass may burst, so try to avoid holding hot water.
Extended data:
Painted glass is toxic, although colored glass can give people a pleasing feeling and add a lot of interest to our lives. However, the colorful world of glass flowers contains harmful and even poisonous elements, such as heavy metals such as lead, chromium, cadmium, nickel, copper and manganese, and nonmetals such as arsenic, fluorine, chlorine and sulfur. In the process of industrial production, these elements will be released and gasified, polluting the atmosphere and water sources, thus causing harm to human beings.
Among them, cadmium contained in the glass coated with pigment will also stimulate the respiratory tract, and long-term contact will cause loss of sense of smell, and yellow spots or gradually yellow circles will appear on the gums. Cadmium compounds are not easily absorbed by the intestine, but can be absorbed by the human body through breathing and accumulated in the liver or kidney, causing harm, especially to the kidney. It can also lead to osteoporosis and softening.
People's Network-Three kinds of drinking cups or cancer-causing cups are the safest.