Nanomaterial Information

Symbol TiO2 nanoparticle
Name Titanium dioxide, anatase
Source Aldrich #637254,St. Louis, MO

Dispersant  -
Size Diameter: <25 nm
Aggregate Size[1] 222.1 ± 50.7 nm
-0.85 µm/(V/cm)-s 
Refractive Index 2.488

Toxicity test method

Suspension preparation method
10 mg / 50 mg TiO2 was added to 10 mL/50 mL ultrapure water generated by a Barnstead EPure system (Thermo Fisher Scientific, Waltham, MA) in a 10 -mL / 50 -mL centrifuge tube, and sonicated in a sonicating cup horn ( sonics & Material, Newtown, CT) at 100 W for 30 min. The samples were stored at room temperature in 10 -mL / 50 -mL centrifuge tubes wrapped in aluminum foil before use within 6 months.

Particle size measurement method

ENM electrophoretic mobility measurement.


  1. Number mean hydrodynamic diameter nm. Measured by dynamic light scattering (Zetasizer Nano, Malvern, Worcestershire, UK)
  2. Measured at ~pH 5.

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