Antimony oxide (Sb₂O₃) is a ceramic material used primarily as an opacifier in glazes, providing white, smooth, opaque finishes. Although not as common as tin oxide or zirconium oxide, it is still a valuable option for creating white glazes or for modifying colored glazes, making them more opaque without significantly altering their hue.
In addition to its use as an opacifier, antimony oxide can be combined with other oxides to produce decorative effects and color variations. Antimony oxide is compatible with a wide range of glazes and temperatures, making it versatile in both artistic and functional ceramics. However, its toxicity requires additional precautions when handling it, especially in powder form.
Interesting Fact
Antimony oxide was widely used during the Renaissance in Italian ceramics, such as majolica, to achieve brilliant white glazes that served as the basis for intricate decorations.
Helpful Tip
Sieve the antimony oxide carefully before incorporating it into your glazes to ensure even distribution. Wear gloves, mask and work in a ventilated area to avoid dust inhalation. Test small parts to adjust their proportion in the mixture and prevent thermal incompatibility problems.
