Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

- Appearance: homogeneous, odourless, intense yellow powder

- Decomposition: 949 °C (onset 911 °C)

- Relative density: 4.420

- PSD: d50 = 11.9 µm, d90 = 29.4 µm, d10 = 2.8 µm

- Dustiness:

total: 126.32 mg/g

MMAD = 20.44 µm, GSD = 2.65

Fractional deposition in human respiratory tract: Head (ET): 55.61 %, Tracheobronchial (TB): 0.64 %, Pulmonary (PU): 0.79 %

- Transformation/ dissolution of zircon, cadmium yellow with a loading of 1 mg at 21.5 ± 1.5 °C after 672 hours at pH 8:

Zr [µg/L] background (means) corrected: 0.8195 ± 0.4349

Cd [µg/L] background (means) corrected: 0.1973 ± 0.0993

Additional information

Studies conducted in accordance with EU guidelines are available for: appearance, decomposition temperature, relative density, particle size distribution, dustiness and transformation / dissolution.

Waivers are proposed for boiling point, vapour pressure, partition coefficient, surface tension, flash point, auto flammability, flammability for solids, pyrophoric properties, flammability in contact with water, explosiveness, oxidising properties, stability in organic solvents, dissociation constant and viscosity.