Magnesium carbonate

We are offering magnesium carbonate. magnesium carbonate(magnesite)(food grade) 1. English name: magnesium carbonate(magnesite) 2. Molecular formula: mgco3 3. Content(mgo): 40.0 43.5% 4. Insoluble substance in acid: 0.05% 5. Arsenic(base on as): 3mg/kg 6. Calcium oxide: 0.6% 7. Heavy metal(base on pb): 0.003% 8. Lead: 10mg/kg 9. Soluble salt: 1% use: alalis; drying agent, color fixative, carrier; leavening agent, acidity chaincutting agent.