Magnesium Hydroxide Powders

Our line of magnesium hydroxide powders are used in wet granulation and direct compression tableting and suspension applications. A wide range of magnesium powders is available. They vary in density and particle size distribution. On dry basis, Magnesium Hydroxide, dried at 105°C for 2 hours, contains not less than 95.0% and not more than 100.5% of Mg(OH)2.

Product Name


Typical Density (g/mL)


Dense powder, USP, Ph. Eur., low lead

Tapped 0.68-0.84


Resuspendible powder, USP, Ph. Eur.

Tapped 0.60-0.75


Dense powder, USP, Ph. Eur.

Tapped 0.60-0.90

5100 is free flowing and blends very well with other ingredients. It is low lead (<125 ppb) and can be used in antacids that must meet USA’s California Proposition 65.

5200 is a medium-density product specifically designed for rehydration from the powdered form to product a smooth, viscous, nonseparating suspension. This is required for milk of magnesia (MoM) laxative systems. It is cost-effective for shipment anywhere in the world since it eliminates the cost of shipping water.

5300 is a dense powder that conforms to both USP and EP standards.

Related Applications

Ingredients for Antacids and Laxatives

Ingredients for Antacids and Laxatives

Antacid suspensions can be made from viscous pastes, pumpable gels, powders (preferably micronized) or preformulated products. Antacid tablets and Laxative suspensions can be made from powders, directly compressible (DC) ingredients or DC preformulated products.

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