company tower banner
Evonik Company Logo
ZEOFREE® 5161 is a hydrophilic, coarse silica combining a high absorptive capacity with a good flowability. It is well suited to transform any type of liquid, including defoamers, into dry, free flowing powder concentrates.

Features: Anti-Caking, Free Flowing

Knowde Enhanced TDS

Identification & Functionality

CAS No.
7631-86-9

Features & Benefits

Materials Features
Benefits
  • Improved flow properties
  • Offers faster production rates and increased capacity
  • Reduced production downtime and maintenance
  • Improved product quality and consistency
  • Improved package weight accuracy

Properties

Physical Form
Physico-Chemical Properties
ValueUnitsTest Method / Conditions
pH Value (in 5% water)7
Median Particle Size20µm
Loss on Drying5%
Linseed Oil Absorption220ml/100g
Carrying Capacity72%
Bulk Density160kg/m³
BET Surface Area160m²/g

Packaging & Availability

Country Availability
Regional Availability
  • North America

Storage & Handling

Shelf Life
36 months
Storage Conditions

Our silica products are inert and extremely stable chemically. However, due to their high specific surface area, they can absorb moisture and volatile organic compounds from the surrounding atmosphere. Therefore, we recommend storing the products in sealed containers in a dry, cool place, and removed from volatile organic substances. Even if a product is stored under these conditions, after a longer period it can still pick up ambient moisture over time, which could lead to its exceeding the specified moisture content. For this reason, our recommended use-by date is 36 months after date of manufacture. Product more than 36 months old should be tested for moisture content before use in order to make certain that it is still suitable for the intended application.