Magnesium oxide, hydroxide and carbonate are all used as food additives, antacids, mineral supplements and processing aids. A food/pharma grade is not a different molecule — it is a different control regime applied to the same chemistry.
Parameters that move to the front
- Heavy metals, arsenic, lead and cadmium, reported per batch against the applicable food or pharmacopoeial limit.
- Loss on ignition, acid-insolubles and chloride, which affect both assay accuracy and product stability.
- Microbiological limits and controlled handling through milling and packing.
- Full lot traceability from raw material intake to the packed bag.
Documentation buyers should expect
A certificate of analysis for the specific lot, the test methods used, the controlling standard (for example GB 1886.217-2016 for food-grade MgO), shelf-life and storage conditions, and the packing declaration. Where an audit requires a specific scheme, ask us directly: we will state exactly what is in place for that grade rather than imply a certification we cannot document.
Need the measured values for a specific grade? Ask our technical team for the data sheet and a trial sample.