Composition: Cr Sn References: Maximum Temperature 2300 F. Do not use Zinc in glazes. Must contain 6.7% to 8.4% whiting. Mason Stains Home Page 6006 Deep Crimson - 1/4 pound 6006-1-4$5.25 Deep Crimson - 1/2 pound 6006-1-2$9.82 Deep Crimson - 1 pound 6006-1$18.29 Deep Crimson - 5 pounds 6006-5$84.70