Aluminum hydroxide

● Alumina products

● Aluminum compounds such as aluminum fluoride, cryolite, aluminum sulfate, polyaluminum chloride (PAC), and basic aluminum chloride (ACH)

● Flame retardants (operating on an endothermic flame-retardant mechanism)

● Waterproof Coating for Fabrics

Since Al(OH)₃ is insoluble in water, when used as a filler to coat the fabric surface or penetrate fiber gaps, it effectively blocks moisture from penetrating the fabric

while providing smoke suppression and antistatic properties

● Inks

Extender pigments/fillers: As a white filler, it increases pigment loading capacity and adjusts rheological properties in inks

High transparency: With a refractive index similar to many binders, it is suitable for formulating glossy, transparent inks

Optimized rheology and abrasion resistance: When combined with resin-coated particles in formulations, it enhances the scratch resistance of printed materials and the flow properties of the ink

Flame retardancy: Used as a flame retardant additive in specialty inks

● Optical Glass, Fiberglass, and High-Borosilicate Glass Resistant to High Temperatures

The introduction of Al effectively regulates glass viscosity, accelerates melt solidification, and enhances the durability of the finished product

In specific production processes, Al(OH)₃ provides better reactivity than direct use of industrial Al₂O₃, though this process generates water vapor

● Paper Fillers

High Whiteness and Gloss: Al(OH)₃ has a high refractive index, significantly improving the whiteness and surface gloss of coated paper

Can be used as an opacity filler to enhance paper opacity

Used as a flame-retardant filler in high-grade, fire-resistant specialty papers, offering excellent smoke suppression properties

Improves printability: Possesses good oil absorption and surface smoothness, enhancing print quality

● Lubricants

Grease fillers/thickeners: Al(OH)₃ can be used in specialty sealing greases or multi-purpose synthetic greases as a solid additive or auxiliary thickener to improve the grease’s structural stability and load-carrying capacity

Metalworking Fluids (Cutting Fluids): In oil-based cutting fluids, fine Al(OH)₃ particles can improve lubricity and anti-wear properties

Functional Lubrication Applications: High thermal stability, suitable for lubrication systems in high-temperature environments

● Pharmaceuticals

Antacids: Aluminum hydroxide (generic name “Algeldrate”) is used as an antacid for humans and animals (primarily cats and dogs). It is superior to alternatives such as sodium bicarbonate because aluminum hydroxide is insoluble in water and does not raise the stomach’s pH above 7, thus avoiding stimulation of excessive acid secretion. Its brand names include Alu-Cap, Aludrox, Gaviscon, and Pepsamar. It reacts with excess acid in the stomach to reduce the acidity of gastric contents, thereby relieving symptoms of ulcers, heartburn, or indigestion.

Management of Hyperphosphatemia: This compound is also used to manage hyperphosphatemia (elevated levels of phosphate or phosphorus in the blood) in patients with renal failure and in animals. Normally, the kidneys filter excess phosphate from the blood, but renal failure leads to phosphate buildup. When aluminum salts are ingested, they bind with phosphate in the intestines, thereby reducing the amount of phosphorus absorbed.