Colloidal Silica

Colloidal silica: one name, hundreds of specifications.

To most people, colloidal silica is just a milky liquid. To us, it is a family of precisely engineered nanomaterials. Each grade is defined by a combination of variables that must be controlled together:

• Particle size, from very fine high-surface-area sols to large-particle dispersions

• Particle size distribution, narrow or broad depending on the application

• Silica concentration, from dilute sols to high-solids grades

• Stabilisation chemistry: sodium, potassium, ammonium, deionised, alumina-modified and surface-modified grades

• pH, viscosity, specific surface area, sodium content and long-term stability

A small change in any one of these can make or break performance in a customer’s process. That is why the grade, not just the product, matters.

DKIC commercially manufactures nearly every grade of colloidal silica used in industry. Our process expertise covers the full chain, from making our own sodium silicate, through ion-exchange purification, to controlled particle nucleation and growth. Every batch is verified with rigorous analytical methods, including titration-based (Sears) surface-area measurement, so particle size and surface area are measured, not assumed.

Because we understand how each grade is built, we can match the internationally benchmarked grades that global formulators have relied on for decades, specification for specification. Customers switching to DKIC can usually do so without changing their formulation, their process or their results, and they gain a reliable Indian source, shorter lead times and direct access to the scientists who make the product.

Our colloidal silica serves a wide range of industries:

• Precision investment casting: primary and backup shell binders

• Refractories and ceramic fibres: high-temperature binders

• Construction: concrete densification, internal curing and oil-well cementing

• Catalysts and catalyst supports

• Paper and pulp: retention and drainage aids

• Polishing and surface finishing

• Coatings, paints and adhesives: scratch resistance, anti-slip and anti-soiling

• Textiles, beverage clarification, battery gels and many more

If your application needs a grade, chances are we already make it. If we don’t, we can develop it.

Packing: 

• 60 kg Carbuoys

• 250kg virgin seaworthy barrels

• 1250 kg IBC.