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Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Zirconium zircon with encapsulated cadmium sulphide is an inorganic, intense yellow, odourless powder.

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

- relative density: 4.42

- Particle size distribution: d10 = 2.8 µm, d50 = 11.9 µm, d90 = 29.4 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 %

- The transformation/dissolution

Full test 7 days at 1 mg/L and pH 8: 0.12 µg Cd/L and 0.54 µg Zr/L

Full test 28 days at 1 mg/L and pH 8: 0.21 µg Cd/L and 0.88 µg Zr/L

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.