Registration Dossier
Registration Dossier
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EC number: 701-304-2 | CAS number: -
Endpoint summary
Administrative data
Description of key information
The pigment ( High-temperature calcination products of diiron trioxide and amorphous silica resulting in a glassy silica matrix) is an inorganic, red, odourless, solid powder.
- Melting point > 1000 °C
- relative density: 2.49.
- Particle size distribution: d10 = 3.3 µm, d50 = 7.8 µm, d90 = 17 µm
- Dustiness:
total: 117.26 mg/g
MMAD= 12.68 µm, GSD= 3.57
Fractional deposition in human respiratory tract: Head (ET): 58.4 %, Tracheobronchial (TB): 1.2 %, Pulmonary (PU): 2.9 %
- The transformation/dissolution at pH6
The dissolved concentrations of silica at a 1 mg/L loading after 7 and 28 days and a 100 mg/L loading after 7 days were below the LOD (0.07 µg/L) and therefore not determinable.
The dissolved concentrations of iron at a 1 mg/L loading after 7 and 28 days and a 100 mg/L loading after 7 days remained below < 1 µg/L.
Additional information
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