Description

Ludox Am is a stable, aqueous colloidal silica dispersion, widely recognized for its uniform particle size and high purity. This product is essential for applications requiring a consistent, high-surface-area inorganic binder or filler that provides excellent stability and clarity. It is a critical material for industries such as precision casting, catalysis, and advanced coatings, where surface chemistry and particle uniformity are paramount.

Application

• Investment Casting Binder: Used as a primary binder in ceramic shell molds for the precision casting of superalloys and other metals.
• Catalyst Support: Serves as a high-surface-area, inert carrier for various catalysts in chemical synthesis and petrochemical processes.
• Polishing & CMP Slurries: A key component in slurries for chemical-mechanical planarization (CMP) of silicon wafers and other semiconductor substrates.
• Reinforcing Filler: Imparts strength and dimensional stability to elastomers, adhesives, and composite materials.
• Anti-blocking Agent: Applied as a coating to prevent adhesion between plastic films and sheets.
• Precipitated Silica Precursor: Acts as a starting material for the synthesis of high-purity precipitated silica products.
• Paper & Textile Coatings: Used to improve printability, brightness, and surface smoothness.
• Thermal Insulation: A component in high-temperature insulation materials and refractory fibers.

Basic Information

Product Name	Ludox Am
CAS No.	59112-39-9
Molecular Formula	SiO2 · xH2O
Molecular Weight	60.08 (anhydrous basis)
Synonyms	Colloidal Silica AM; Silica, colloidal; Amorphous Silica Sol; Silica Dispersion AM; Aqueous Silica; Silicon Dioxide Colloid; Synthetic Amorphous Silica (SAS); Ludox® AM-30 (trade name variant)
EINECS	Contact for details

Quality Control

Our Ludox Am is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous internal specifications for critical parameters including silica content, particle size, pH, and viscosity. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15-25°C). Do not freeze. Keep away from strong acids and strong bases to prevent gelation. Under recommended storage conditions, the product maintains stability for an extended period.

Specification

Item	Specification
Appearance	Clear to slightly opalescent liquid
SiO2 Content	30% ± 1%
Particle Size (Mean)	12 nm ± 2 nm
pH (at 25°C)	8.5 - 9.5
Specific Gravity (at 25°C)	1.20 - 1.22
Viscosity (at 25°C)	< 10 cP
Na2O Content	< 0.30%
Chloride (Cl)	< 0.02%

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