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HDK® H1000/4 is a highly efficient free flow additive designed specifically for use in various types of electrophotographic toners, including monocomponent magnetic toners, monocomponent nonmagnetic toners, dual-component toners, crushed type toners, and polymerization toners. It offers medium surface area (BET) and consists of medium-sized silica particles.

Functions: Flow Promoter

Features: Water Resistance

Synonyms: Fumed Silica, Silica, Silicon Dioxide

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Name
CASE Ingredients Functions
Technologies

Features & Benefits

CASE Ingredients Features

Applications & Uses

Use Level
0.5 - 3.0 wt%
Application Details
  • Mono-component magnetic toners
  • Mono-component nonmagnetic toners
  • Dual component toners
  • Crushed type and polymerization toners

HDK® H1000/4 is not suitable for pharmaceuticals, food and feed.

Milling and classifying guarantee a narrow particle size distribution (agglomerates) which contributes to an efficient toner blending.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Agglomerate Particle Size (d50, mean)max. 20µmLaser Diffraction Method
BET Surface (Surface area of hydrophobic silica)approx. 90 m²/gDIN ISO 9277 DIN 66132
Carbon Contentapprox. 1.8 wt %DIN ISO 10694
Density (at 20°C, SiO₂)approx. 2.2 g/cm³DIN 51757
Loss on Drying (at 105°C, 2 hours)approx. 0.5 %DIN EN ISO 787-2
pH (in 4% dispersion, 1:1 mixture of water-methanol)approx. 8.0DIN EN ISO 787-9
Surface ModificationTrimethylsiloxy
Tamped Densityapprox. 220 g/lDIN EN ISO 787-11
Tribo Charge ( Blow off vs Ferrite)approx. - 250µCol/gWacker method
Properties
  • Medium surface area (bet); medium sized silica particles
  • Highly hydrophobic silica by bonded -–O-Si(CH₃)₃ units
  • Negative tribo chargeability
  • Structure modified product
  • Defined agglomerate particle size distribution

Regulatory & Compliance

Safety & Health

Safety Note
  • During transportation and processing HDK® H1000/4 may cause electrostatic charges.
  • Like other amorphous silicas HDK® H1000/4 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

HDK® H1000/4 is offered in the following packaging:

  • pallet with paper bags: 15 kg bags