Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Pyroclore, antimony lead yellow is an odourless, yellow, inorganic, powdery solid.

- Melting point: >1300 °C.

- relative density: 7.81.

- Particle size distribution: D10: 1.2 µm, D50: 5.4 µm, D90: 17.8 µm

- Dustiness:

Total dustiness: 83.10 mg/g

MMAD = 16.29 µm, GSD = 3.27

Fractional deposition in human respiratory tract: Head (ET): 55.6 %, Tracheobronchial (TB): 1.0 %, Pulmonary (PU): 1.6 %

- Transformation/Dissolution

The test item pyrochlore has a loading dependent dissolution of Sb and Pb in aqueous media at pH 6. 26 µg/L Sb and 2936.3 µg/L Pb are dissolved at 22.5 °C (7 days observation) at the higest loading of 100mg/L.

Additional information