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Rheology Control & Free-Flow Agent

Indispensable in pharmaceuticals: HDK® pyrogenic colloidal silicon dioxide is an excipient for pharmaceuticals. It is a highly effective tableting aid, provides free flow for powders and ensures the right rheology in liquid formulations. HDK® greatly enhances the efficiency of processes like granulation and tableting. For liquid pharmaceuticals, HDK® ensures reliable performance throughout storage and application.

Focused on Quality

With our extensive experience in the production of pyrogenic colloidal silicon dioxide, we are able to provide ultra-high-purity products which are consistent from batch to batch, allowing our customers to enjoy uniform product performance. With competence centers in the major regions of the world, we are here to meet your needs.

Product Recommendations

Products
Technical data
BET surface
HDK® H17 approx. 90 m²/g[1] approx. 90 m²/g[1]
HDK® H18 approx. 120 m²/g[1] approx. 120 m²/g[1]
HDK® N20 175 - 225 m²/g[2] 175 - 225 m²/g[2]
HDK® N20 P PHARMA 175 - 225 m²/g[2] 175 - 225 m²/g[2]
HDK® N20 PHARMA 175 - 225 m²/g[2] 175 - 225 m²/g[2]
HDK® T30 270 - 330 m²/g[2] 270 - 330 m²/g[2]
HDK® T40 360 - 440 m²/g[2] 360 - 440 m²/g[2]
Legend
[1] BET surface | DIN ISO 9277 DIN 66132 | of the hydrophobic silica,  [2] BET surface | DIN ISO 9277 DIN 66132,  [] Suited,  [] Well suited,  [] Ideally suited