Tromethamine magnesium aluminum silicate is an inorganic chemical compound, complex mineral group, common silicate crystals containing smectite-group minerals, products with 2-amino-2-hydroxymethyl-1,3-propanediol.
The name describes the structure of the molecule:
- Tromethamine. refers to tromethamine, an organic compound used as a buffering agent to regulate the pH in solutions.
- Magnesium Aluminum Silicate indicates that the silicate in question contains magnesium and aluminum in its structure. This combination of elements gives the compound unique properties, such as the ability to absorb, thicken, and stabilize.
Raw Materials and Their Functions
Magnesium, Aluminum, and Silicon. Elements that form the base of the silicate, contributing to the physical and chemical properties of the compound.
Tromethamine (2-amino-2-hydroxymethyl-1,3-propanediol). A buffering agent used to regulate pH and enhance the stability of the compound.
Industrial Chemical Synthesis of Tromethamine Magnesium Aluminum Silicate
- Combination and Melting the combination of minerals containing magnesium, aluminum, and silicon. These materials are then melted together at high temperatures to form the silicate.
- Addition of Tromethamine. After the formation of the silicate, tromethamine is added to regulate the pH and improve the stability of the compound.
- Reaction Control. The combination reaction and the addition of tromethamine are monitored to ensure the final product has the desired properties.
- Purification. The compound is purified to remove impurities and by-products.
- Quality Control. Tromethamine magnesium aluminum silicate undergoes quality checks to ensure it meets the required standards. After quality control, it is packaged for use in pharmaceutical and cosmetic products.
Form and Color
Tromethamine Magnesium Aluminum Silicate is typically a solid in the form of fine powder usually white or slightly yellowish.

What it is used for and where
Cosmetics
Surfactant - Suspending agent. Cosmetic or pharmaceutical suspensions are known to be thermodynamically unstable and it is therefore essential to include in the formulation a suspending agent capable of dispersing any sedimented particulates and reducing the rate of sedimentation. The presence of this agent increases the consistency of the suspension medium and exerts a protective colloidal action with a surfactant action.
CAS: 66456-45-9
Safety
Aluminium can interfere with different biological processes (cellular oxidative stress, calcium metabolism, etc.), so it can induce toxic effects in different organs and systems, and the nervous system is the main target of its toxicity.
Careful consideration should be given to the risk of cumulative aluminum intake, which cannot be ruled out because this ingredient can be found in both cosmetic products and widely consumed food products such as bread, various baked goods (1).