Description

Gelusil CAS NO 8077-28-9 is a high-purity, synthetic magnesium aluminometasilicate widely recognized for its exceptional adsorptive and rheological properties. This versatile inorganic compound is critical for formulators seeking a multifunctional excipient that enhances product stability and performance. It is primarily utilized in the pharmaceutical, nutraceutical, and personal care industries as a highly effective adsorbent, viscosity modifier, and anti-caking agent.

Application

• Pharmaceutical Tableting: Acts as a superior adsorbent for liquid components in direct compression, improving flowability and preventing tablet capping.
• Suspension Stabilizer: Used in oral and topical suspensions to control viscosity, prevent sedimentation, and ensure dose uniformity.
• Nutraceutical Formulations: Employed as an anti-caking agent in powdered vitamin and mineral supplements to maintain free-flowing properties.
• Cosmetic & Personal Care: Functions as an oil adsorbent and viscosity-increasing agent in creams, lotions, and antiperspirants.
• Catalyst Support: Serves as an inert carrier with high surface area for various catalytic processes in fine chemical synthesis.
• Industrial Coatings: Utilized as a rheology modifier and flatting agent to control sag and improve finish in paint formulations.

Basic Information

Product Name	Gelusil
CAS No.	8077-28-9
Molecular Formula	Al2MgO8Si2 • xH2O
Molecular Weight	262.31 g/mol (anhydrous basis)
Synonyms	Magnesium Aluminometasilicate; Neusilin; Magnesium Aluminum Silicate; Almasilatum; Synthetic Magnesium Aluminum Silicate; Adsorbent Clay; Colloidal Magnesium Aluminum Silicate; Excipient NS
EINECS	Contact for details

Quality Control

Our Gelusil is manufactured under a strict quality management system to ensure batch-to-batch consistency and compliance with major pharmacopoeial standards. Each lot is tested against rigorous specifications for identity, purity, and performance characteristics such as adsorption capacity and pH. Certificates of Analysis (COA) documenting compliance with relevant standards, including potential USP-NF or Ph. Eur. monographs, are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep the container tightly sealed when not in use to protect the product from moisture absorption, which may affect its flow and adsorption properties.

Specification

Item	Specification
Appearance	Fine, white to off-white powder
Identification (IR)	Conforms to standard
Assay (MgO & Al2O3)	Contact for details
Loss on Drying	< 8.0 %
pH (5% suspension)	7.0 - 9.0
Heavy Metals	< 20 ppm
Microbial Limits	Meets Ph. Eur. 2.6.12/2.6.13
Adsorption Capacity	Contact for details

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