Magnesium carbonate hydroxide CAS 39409-82-0

What is of Magnesium carbonate hydroxide CAS 39409-82-0?

​Magnesium carbonate hydroxide (often referred to as basic magnesium carbonate) is a versatile, odorless white solid used across industries as an anticaking agent, pH regulator, absorbent, and flame retardant. It is naturally found as the mineral magnesite and is practically insoluble in water.

Specification

Application Scenarios:

Food Grade:

1. Food Anti-caking Agent: Commonly added to salt, sugar, milk powder, and powdered seasonings. By absorbing trace amounts of moisture, it prevents the powder from clumping during storage, maintaining its loose and free-flowing nature.

Nutritional Fortifier: As an excellent source of magnesium, it is used to fortify infant formula, sports drinks, and health foods.

Flour Improver: In some baking processes, it can adjust the pH of dough and improve the texture of bread.

Chemical Grade:

1. High-end Cosmetics (Powder, Loose Powder): Due to its lightweight texture, strong oil absorption, and non-toxicity, it is often used in loose powder, talcum powder, and eyeshadow. It absorbs excess facial oil, providing a long-lasting matte finish without clogging pores.

2. High-end Toothpaste Abrasive: With extremely low hardness, it can be added to toothpaste as a gentle abrasive, cleaning teeth without damaging tooth enamel, and also thickening and stabilizing the toothpaste.

Industrial Grade:

1. Thermal and Sound Insulation Materials: Due to its lightweight, porous nature and low thermal conductivity, it is widely used in the manufacture of high-grade thermal insulation materials, insulated pipeline shells, and high-grade sound insulation panels.

2. Glass and Ceramics: In the production of specialty glass and high-grade ceramics, it serves as a source of magnesium oxide, improving the heat resistance and chemical stability of the finished product.

3. Rubber Reinforcing Agent: Used as a filler in natural and synthetic rubber. It improves the abrasion resistance, tensile strength, and elongation of rubber, and is commonly used in the manufacture of high-grade rubber products (such as transparent rubber shoe soles, tire inner tubes, and tapes).

4. Environmentally Friendly Flame Retardant: Basic magnesium carbonate undergoes thermal decomposition at high temperatures, releasing moisture and carbon dioxide, and generating refractory magnesium oxide. This process not only absorbs a large amount of heat to lower the surface temperature but also dilutes flammable gases and isolates oxygen, making it widely used for flame retardancy in plastics, cables, and fire-retardant coatings.

​

Packing

Net weight 25kg, composite kraft paper bag lined with PVC bag;