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Aluminum Starch

Updated: 2026-07-15

Overview

Aluminum starch is a chemical compound derived from the reaction of starch with aluminum salts. It is widely utilized in industrial applications due to its unique properties, such as thermal stability and thickening capabilities. This compound is particularly valued in the manufacturing of adhesives, coatings, and paper products. Aluminum starch is known for its ability to enhance the viscosity and stability of formulations. Its insoluble nature in water makes it suitable for applications requiring resistance to moisture. The compound is typically available as a white to off-white powder, with variations in particle size depending on the manufacturing process.

Physical and Chemical Properties

Aluminum starch exhibits high thermal stability, making it suitable for applications involving elevated temperatures. Its density is approximately 1.5 g/cm³, and it decomposes before reaching a melting point. The compound is insoluble in water but can dissolve in certain organic solvents, depending on the specific formulation. Key properties of aluminum starch include its thickening capability and adhesive strength. These characteristics are leveraged in industries such as paper manufacturing, where it is used for sizing and coating. The compound’s resistance to moisture also contributes to its durability in various applications.

Main Applications

Aluminum starch is primarily used in the production of adhesives and coatings, where its thickening properties are highly beneficial. It is also employed in paper sizing to improve the paper's strength and resistance to moisture. Additionally, the compound serves as a stabilizer in certain industrial processes. In the food packaging industry, aluminum starch is sometimes used as a coating material to enhance barrier properties. Its thermal stability makes it suitable for applications requiring heat resistance, such as in the manufacturing of fire-retardant materials.

Safety and Storage

When handling aluminum starch, it is important to avoid inhalation of dust particles, as they can irritate the respiratory system. Protective equipment, such as masks and gloves, should be worn during handling. The compound should be stored in a cool, dry place, away from moisture and direct sunlight to prevent degradation. In case of accidental exposure, rinse affected areas with plenty of water and seek medical attention if necessary. Proper storage and handling procedures are essential to maintain the compound's integrity and ensure safety in industrial settings.

B2B Procurement Guide

When procuring aluminum starch, buyers should verify the purity and particle size specifications with suppliers to ensure the product meets their application requirements. It is also advisable to request samples for testing before placing bulk orders. The reference price range for aluminum starch varies depending on purity and supplier, typically ranging from $5 to $15 per kilogram. Buyers should compare prices and quality from multiple suppliers to secure the best deal. Additionally, consider the supplier's reputation and delivery capabilities to ensure a reliable supply chain.

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