Description

Magnesium Trisilicate Hydrate is a fine, white, odorless inorganic compound with versatile adsorbent and antacid properties. Its high surface area and chemical stability make it a valuable functional additive across several industrial and pharmaceutical sectors. This material is essential for manufacturers in the pharmaceutical, food, and chemical processing industries seeking a reliable, multi-purpose agent for formulation, purification, and stabilization.

Application

• Pharmaceutical Antacid & Excipient: A key active ingredient in over-the-counter and prescription antacid formulations to neutralize gastric acid. Also used as a glidant, anti-caking agent, and adsorbent in tablet manufacturing.
• Food Additive (Anti-caking Agent): Employed as an anti-caking agent (E553a) in powdered food products like table salt, spices, and baking mixes to ensure free flow.
• Catalyst & Catalyst Support: Serves as a solid support or co-catalyst in various organic synthesis and petrochemical processes due to its thermal stability.
• Adsorbent for Purification: Used to adsorb impurities, colors, and moisture in the refining of oils, chemicals, and in gas purification systems.
• Ceramics & Glass Manufacturing: Acts as a source of magnesium and silica in the production of specialty glasses, enamels, and ceramic bodies.
• Paint & Coating Additive: Functions as an extender and flatting agent to improve texture, durability, and matte finish in paints and coatings.
• Personal Care Products: Utilized in cosmetics, such as face powders and creams, for its oil-absorbing and texture-enhancing properties.

Basic Information

Product Name	Magnesium Trisilicate Hydrate
CAS No.	39365-87-2
Molecular Formula	Mg2Si3O8·xH2O
Molecular Weight	260.86 (anhydrous basis)
Synonyms	Magnesium Silicate Hydrate; Trisilicate de Magnésium (French); Magnesiumhydrogensuslikat; Florisil® (related material); Antacid Magnesium Trisilicate; E553a; INS 553a; Synthetic Magnesium Trisilicate
EINECS	254-449-7

Quality Control

Our Magnesium Trisilicate Hydrate is manufactured under a strict quality management system. It can be produced to meet various pharmacopoeial standards, including USP-NF and Ph. Eur. monographs, as well as food-grade specifications (FCC). Every batch undergoes rigorous testing for identity, assay, loss on drying, heavy metals, and other critical parameters. A comprehensive Certificate of Analysis (COA) is provided with each shipment to ensure traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	Fine, white, odorless powder
Identification (IR)	Conforms
Assay (as Mg2Si3O8)	≥ 95.0 %
Loss on Drying	≤ 15.0 %
Acid Consuming Capacity	≥ 140 ml (0.1N HCl/g)
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Microbial Limits	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.