Talc is a common component in glazes and frits. It is used to adjust the thermal expansion of glazes, aiding in controlling the coefficient of expansion to match various clay bodies and reduce the risk of glaze crazing or cracking during firing.

Talc is used as a raw material in ceramic bodies to enhance workability and improve firing properties. It can contribute to the plasticity of the clay mixture, making it easier to shape and mold. Talc can also increase the vitrification and maturing temperature of the ceramic, improving the overall performance of the finished product.

In ceramic formulations, talc serves as a filler and reinforcement agent. It can improve strength, stiffness, and dimensional stability in the final ceramic product.

Talc can act as an opacifier, enhancing the opacity and brightness of ceramic materials. It is used in certain glazes and bodies to create specific visual effects or to enhance the overall appearance of the finished ceramic products.

Talc is used to fine-tune the properties of ceramic materials. Its addition in varying amounts allows ceramicists to adjust characteristics like thermal expansion, shrinkage, and plasticity to meet specific requirements for different applications.