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HDK® D05 is a synthetic, hydrophilic amorphous silica produced via flame hydrolysis. It is a white colloidal powder of high purity. Achieving a good dispersion of HDK® D05 is essential to ensure optimal performance. This product serves as a filler in both organic and inorganic systems, allowing for high loading without significant impact on rheology. It finds application in various industries, including coatings and resins. HDK® D05 is also valued as a highly pure source of SiO².

Chemical Family: Silica

Functions: Extender

Synonyms: Fumed Silica, Silica, Silicon Dioxide

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Chemical Name
CASE Ingredients Functions
Technologies

Features & Benefits

CASE Ingredients Features

Applications & Uses

Application Details
  • A good dispersion of HDK® D05 is a must to assure optimum performance.
  • HDK® D05 is used as a filler in many organic and inorganic systems, where a high loading is of interest with low impact on rheology.
  • Examples are the use in coatings and resins. HDK® D05 is used as a highly pure SiO2 source.
  • HDK® D05 is not suitable for pharmaceuticals, food and feed.

Properties

Appearance
White colloidal powder
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C, SiO₂)approx. 2.2 g/cm³DIN 51757
Loss of Weight (at 1000°C, 2hours (based on the substance dried at 105 °C for 2 hours))max. 2 %DIN EN ISO 3262-19
Refraction Index1.46
Silanol Group Density2SiOH/nm²
SiO₂ Content (based on the substance heated at 1000°C for 2 hours)min. 99.8%DIN EN ISO 3262-19
Specifications
ValueUnitsTest Method / Conditions
BET Surface35 - 65 m²/gDIN ISO 9277 DIN 66132
Loss on Drying (at 105°C, 2 hours)max. 1.0 %DIN EN ISO 787-2
pH (in 4% dispersion, 1:1 mixture of water-methanol)3.8 - 4.8DIN EN ISO 787-9
Sieve Residue (min. 40 µm)max. 0.03 %DIN EN ISO 787-18, Mocker Apparatus
Tamped Densityapprox. 50 g/lDIN EN ISO 787-11
Properties

White colloidal powder of high purity.

Safety & Health

Safety Notes

During transportation and processing HDK® D05 may cause electrostatic charges. Like other amorphous silicas HDK® D05 does not show either carcinogenic (IARC classification, Volume 68, 1997) or mutagenic properties.

Packaging & Availability

Country Availability
Packaging Type
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • North America
  • Oceania
Packaging Information

Pallet with paper bags: 10 kg bags.

Storage & Handling

Storage Information

HDK® D05 should be stored in the original packaging in dry storage areas.