
Magnesium Oxide (MgO, CAS 1309-48-4), min. 98%, light and heavy, USP/EP and food grade, supplied wholesale by Zyntex. For antacids, food, feed, chloroprene rubber and refractories. CoA and SDS with every lot.
Magnesium oxide (MgO) is a white, fine powder with at least 98% MgO. Producers make it by calcining magnesium carbonate or hydroxide; light-burned grades are reactive and fluffy, whereas heavy and dead-burned grades are dense and refractory.
Pharmaceutical companies use it as an antacid and laxative and as a magnesium source in tablets, while food producers use it as E530 and in fortification. Similarly, feed producers use it as a magnesium source for cattle, rubber producers use it in chloroprene curing, and steel and cement industries use dead-burned magnesia in refractory linings. It also serves in water and flue gas treatment.
Furthermore, related magnesium compounds in our range include Magnesium Hydroxide, Magnesium sulfate and Magnesium citrate.
Typical uses include, for example:
💊 Pharmaceuticals
Antacid, laxative as well as magnesium source.
🐄 Animal Feed
Magnesium source for cattle.
🧪 Rubber
Curing agent in chloroprene rubber.
🔥 Refractories
Dead-burned magnesia for linings.
| Parameter | Standard Value |
|---|---|
| Product Name | Magnesium Oxide |
| CAS Number | 1309-48-4 |
| Molecular Formula / Weight | MgO / 40.30 g/mol |
| Assay (MgO Content) | Min 98.0% |
| Grades | Light and heavy; USP / EP / Food Grade |
| Documents | CoA as well as SDS with every lot |
⚠️ Safety & Handling: Not classified as hazardous under GHS, but fine dust may irritate the eyes and respiratory tract. Avoid dust formation and also wear dust protection and eye protection. Store in tightly closed bags in a dry place, because it absorbs moisture and carbon dioxide. Always consult the Safety Data Sheet (SDS), because it contains the full classification and handling instructions.
What is the difference between light and heavy grades?
Light magnesium oxide is fluffy and reactive, whereas heavy magnesium oxide is dense; pharmacopoeias describe both.
Which grades do you supply?
Pharmaceutical (USP/EP), food, feed as well as technical grades are available.
How can I get a price and documents?
Prices depend on quantity, packaging and destination, so please contact us with your required volume. We then send a quotation together with the CoA and SDS.