Barium sulfate (BaSO₄) is a chemical compound used in ceramics mainly as an opacifier in glazes. Its ability to generate white and opaque glazes makes it an economical alternative to tin oxide, especially in low-temperature formulations. In addition, its chemical structure gives it refractory properties, which makes it useful in glazes and clays that require thermal stability.
In decorative glazes, barium sulfate can be combined with other materials to create translucent or satin finishes, while in clay bodys it helps to improve durability and heat resistance. It is especially popular in industrial ceramics, where a balance between functionality and aesthetics is sought.
Interesting Fact
Barium sulfate is also used in medicine as a contrast medium in X-rays because of its ability to block X-rays and provide clear images of internal organs.
Helpful Tip
Sieve barium sulfate carefully before mixing with glazes or clays to avoid lumps. Test in small quantities to adjust the desired opacity and texture. Work in a ventilated space and wear gloves and mask when handling.
