Alumina Hydrate is a fine granular white powder that remains in suspension better in glaze slurries and has better adhesive qualities than Alumina Calcined. Used in glazes to increase hardness, aid stabilization and help resist crazing. Can impart matteness in the glaze. Small amounts decrease fluidity of glazes when they melt. In certain pink glazes, a small amount of alumina hydrate can enhance the color. Often used as a primary component in kiln wash and wadding due to its high melting point.