Product Description

AEROSIL® 300 is a hydrophilic fumed silica with a specific surface area of 270–330 m²/g — noticeably higher than our AEROSIL® 200 F and AEROSIL® 200 HV grades (175–225 m²/g). That higher surface area gives AEROSIL® 300 a stronger rheological build-up per unit dose, which means less product is needed to reach the same thickening or anti-sag effect — a meaningful cost advantage in high-volume clear coating formulations.

Its finer particle network also disperses to a higher level of transparency once fully wetted out, which is why AEROSIL® 300 is the grade we recommend for clear or low-haze coating systems rather than pigmented or opaque formulations, where the standard 200 m²/g grades are typically sufficient and more cost-effective.

Need to compare this model with other grades? Read our full AEROSIL® fumed silica grade comparison guide to choose the right hydrophilic or hydrophobic fumed silica for your formulation.

Key Benefits

• higher efficiency — stronger thickening effect per unit dose, so lower loading is typically needed.

• high transparency after good dispersion— suited to clear and low-haze coating systems.

Technical Data

Need the full PDS and MSDS? Contact our sales team to request the latest documents.

Typical Applications

• Wood coatings — sag control and rheology modification without clouding clear finishes

• Plastic coatings — anti-settling and thickening for clear or lightly pigmented systems