Zirconium Silicate 5 Micron Opacifier

Zirconium Silicate 5 Micron Opacifier is a finely milled zircon-based material widely used in ceramics to provide opacity and whiteness to glazes, slips, and engobes. Zirconium silicate (ZrSiO4) is highly effective at scattering light within the glaze matrix, resulting in a white, opaque appearance, even in small quantities. The 5-micron particle size ensures a smooth, consistent texture in ceramic finishes.

Applications in Ceramics:

• Opacity in Glazes: It is primarily used as an opacifier in ceramic glazes, giving them a white or opaque appearance. This is particularly important in creating solid-colored glazes or covering underlying clay bodies.
• Matte Glazes: In certain formulations, zirconium silicate can contribute to matte glaze finishes.
• Slip and Engobe Additions: When added to slips or engobes, it can provide an even, opaque layer that helps with color consistency.

Safety Considerations: Zirconium silicate is generally considered safe for use in ceramics, including on food-contact surfaces, as it is chemically inert at the high temperatures used in ceramic firing. However, like all fine powders, care must be taken during handling to avoid inhalation of dust. Using appropriate personal protective equipment (PPE), such as masks and gloves, along with proper ventilation, is essential when working with dry zirconium silicate powder.

This material's ability to maintain stability at high firing temperatures and its effectiveness at producing bright, opaque finishes make it a staple in many ceramic processes.