Composition: Pr Zr Si References: Maximum temperature 2300 F. May be used with our without Zinc. Mason Stains Home Page 6450 Praseodymium Yellow - 1/4 pound 6450-14$3.55 Praseodymium Yellow - 1/2 pound 6450-12$6.63 Praseodymium Yellow - 1 pound 6450-1$12.35 Praseodymium Yellow - 5 pounds 6450-5$57.20