Introduction
Basic magnesium carbonate is an inorganic hydrate composed of magnesium carbonate and magnesium hydroxide, appearing as a white, bulky, and fluffy powder. It is non-toxic and odorless. It generally exhibits weakly alkaline properties. It dissolves easily in dilute acids, releasing carbon dioxide gas; at high temperatures, it undergoes a decomposition reaction to produce magnesium oxide, water, and carbon dioxide.
Specification
| Item | Specification |
| Appearance | White, bulky, fluffy powder |
| Assay (Purity) | 40.0% – 44.0% (as MgO) |
| Melting Point | Decomposes before melting |
| Volatility | Non-volatile |
| Ash Content | > 40.0% (as MgO upon ignition) |
| Solubility | Practically insoluble in water, soluble in dilute acids |
| Thermal Stability | Starts to lose CO2 and H2O around 350°C-700°C |
Applications
- Rubber & Plastics Industry: Excellent filler and reinforcing agent, increasing wear resistance and flame retardancy of products.
- Pharmaceuticals & Food: Used as an antacid in medicine to neutralize stomach acid; used as a flour improver and anti-caking agent in the food industry.
- Sporting Goods: Used as an anti-slip powder (“gym chalk” for weightlifting and gymnastics) to absorb hand sweat and increase friction.
Storage
Should be stored in a dry, ventilated warehouse to prevent moisture. Keep away from acidic substances. Ensure packaging is intact and avoid mixed storage with toxic or odorous items.
Handling and Precautions
The dust is extremely light and fluffy, easily becoming airborne during operation. Dust masks should be worn to avoid inhalation into the respiratory tract. It is non-toxic, but massive dust contact with the eyes may cause physical irritation.
Formula
Antacid Tablet Base: Basic Magnesium Carbonate (30%) + Aluminum Hydroxide (30%) + Starch/Excipients (40%).
Function: Basic magnesium carbonate acts as a weakly alkaline antacid, rapidly and mildly neutralizing excess hydrochloric acid in the stomach to relieve heartburn. Compounding it with aluminum hydroxide offsets the side effects of diarrhea and constipation caused by each respectively.
Packaging
fiber drum or carton box, lined with PE bag. Customized packaging available upon request.