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Irasorb BITO

Technical Datasheet | Supplied by Keeling & Walker
Irasorb BITO from Keeling & Walker is tin doped indium oxide-based near-infrared absorber/filter. It is a blue powder consisting of aggregates of spherical primary particles. It provides high degree of transparency and laser sensitivity to generate good marking results. Irasorb BITO is used for the preparation of transparent conductive and infrared absorbing polymers. Recommended for 3D printing powder, antistatic film & fibers, automotive window film, brand protection and laser marking of transparent materials. Also, used in NIR absorbing plates, personal protection equipment and solar protection/IR cut film.
Product Type
Other Additives for Thermoplastics > Infra-red Filters
Chemical Composition
Blue indium tin oxide
Physical Form
Product Status
Applications/ Recommended for
  • Buildings & constructions > Windows (incl. window profiles)
  • Personal safety/ Protection equipments
  • Fibers/ Textiles/ Carpets > Fibers
  • Visual aspect & aesthetics > Transparency

Irasorb BITO Properties


Value & Unit
Test Condition
Test Method
Surface Area
> 30 m2/g
(Brunauer-Emmett-Teller (BET) Theory)
Electrical Resistivity
< 0.2 ohm-cm
Particle Size
< 10 µm
(D50%. Laser Diffraction)

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