Composition: Cr Al Si References: Maximum temperature 2300 F. Do not use Zinc in glazes. Mason Stains Home Page 6223 Ivy - 1/4 pound 6223-14$4.34 Ivy - 1/2 pound 6223-12$8.12 Ivy - 1 pound 6223-1$15.12 Ivy - 5 pounds 6223-5$70.00