Strontium carbonate (SrCO₃)
Strontium carbonate is a compound used in ceramics, especially in the formulation of high-temperature glazes, to modify colors, reduce the melting point and provide a smooth, shiny surface. As a substitute for barium carbonate, strontium is preferred because of its lower toxicity. In terms of color, this compound is versatile: it can produce everything from opaque whites to soft shades of yellow and green, depending on the glaze composition and firing conditions.
Strontium carbonate is compatible with other oxides and fluxes, which makes it suitable for obtaining long-lasting, high-quality glazes. In addition, in combination with other colorants, it can improve the color stability and durability of the glazed surface, preventing crackle or tarnish. It is also used in glazing techniques to achieve color depth effects and a more uniform texture, ideal for porcelain and stoneware pieces where a refined aesthetic finish is sought.Interesting Fact
Unlike barium carbonate, strontium is non-toxic, making it a safer option for ceramists looking to produce bright, long-lasting glazes without the risk of toxicity.Helpful Tip
If you decide to replace barium carbonate with strontium in your glazes, be sure to test, as it can affect the flow and finish of the glazed surface.
