Borax is sodium borate, and its aqueous solution reacts with calcium chloride aqueous solution to generate calcium borate and sodium chloride.

Practice: According to the ratio of borax to water of 2% and boric acid of 3%-5%, add water while stirring.

Extended data:

Mainly used in glass and enamel industry. In glass, the ultraviolet transmittance can be enhanced, and the transparency and heat resistance of glass can be improved. In enamel products, it can make enamel not easy to fall off and shiny. It is also widely used in special optical glass, glass fiber, non-ferrous metal welding agent, jewelry adhesive, printing and dyeing, washing (silk and woolen goods) and so on. ), gold refining, cosmetics, pesticides, fertilizers, borax soap, preservatives, antifreeze and medical disinfectants.

Borax is the basic raw material for preparing boron-containing compounds, and almost all borides can be prepared with borax. They are widely used in metallurgy, steel, machinery, military industry, cutting tools, paper making, electron tubes, chemicals and textiles.

In medicine, borax is used for disinfection and antisepsis of skin mucosa, treatment of skeletal fluorosis, tinea pedis, pulpitis, fungal vaginitis, cervical erosion, bedsore, acne, eczema of external auditory canal, herpes virus dermatosis and epilepsy, and treatment of tumor. In animal medicine, borax is used to treat chicken laryngotracheitis, goat infectious pustulosis, mycoplasma hyopneumoniae and chronic mucinous endometritis of cattle, and it has also attracted wide attention as a feed additive.

Baidu Encyclopedia: Borax