Registration Dossier

Physical & Chemical properties

Particle size distribution (Granulometry)

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Additional information

Granulometry (Niederbiechler, 2012)

The particle size distribution of vanadium carbide can be described as follows:

D10 = 1.01 µm

D50 = 3.96 µm

D90 = 29.66 µm

Dustiness (Parr & Grewe, 2012)

Total Dustiness (airborne fraction): 14.54 mg/g (DMT)

Mass median aerodynamic diameters (bi-modal distribution) of airborne fraction: MMAD1 = 4.76 µm (18.1%) , MMAD2 = 27.20 µm (81.9%) (distribution fitted to cascade impactor data, percentile in parentheses indicates weighting factor).

Geometric standard deviation of MMAD: GSD1 = 1.98, GSD 2 = 1.47.

Fractional deposition in human respiratory tract (MPPD model, based on calculated MMAD):

Head (ET): 56.40 %

Tracheobronchial (TB): 0.45%

Pulmonary (PU): 1.11%