... . Specifications: Items Parameter Appearance white crystals or crystalline powder m.p.°C 69.0-70.0 Purity, %,≥ 99.5Water content, % ≤ 0 ... metal (as Pb), % ≤ 0.0004 As ,% ≤ 0.0001 Free cresol(as p-cresol) ,% ≤ 0.02 Grades: Food grade,technical grade,feed grade. Containers ...