Calcium oxide Brand: jianshi The specifications of our food grade calcium oxide are better than other brands', reach to the world advanced level. As processing agent, it can be used in all kinds of foods, and the residual is unlimited. Specification Items Specifications Description White or gray particle, powder Caow/% 99 Magnesium and alkali salts, w% 1.1 Acid-insoluble substances, w% 0.2 Arsenic (as as),  mg/kg 0.4 Fluoride(as f), mg/kg 76 Pb, mg/kg 0.08 Loss on ignition,  w/% 3.0 Particle size (325 meshes), w% 90 Conclusion: this product conforms to requirements of standard gb30614.