Registration Dossier
Registration Dossier
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EC number: 269-061-0 | CAS number: 68186-99-2 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77005.
Endpoint summary
Administrative data
Description of key information
The test substance (manganese alumina pink corundum, CAS 68186-99-2) is a pink, odourless powder.
- Melting point: >1000 °C.
- relative density: 4.01.
-Particle size distribution: D10: 1.0 µm, D50: 2.2 µm, D90: 4.3 µm
- Dustiness:
Total dustiness: 55.81 mg/g
MMAD1 = 3.96 µm (28.9 %) , MMAD2 = 23.75 µm (71.1 %)
Geometric standard deviation of MMAD: GSD1 = 1.24, GSD 2 = 5.98.
Fractional deposition in human respiratory tract: Head (ET): 55.8 %, Tracheobronchial (TB): 1.5 %, Pulmonary (PU): 3.6 %
-Transformation/dissolution, pH6 (pH that maximises dissolution)
The dissolved concentrations of aluminium and manganese at a 100 mg/l loading after 7 days were below LOD (< 0.01µg/L) for aluminium and 1.48 µg/L for manganese.
The dissolved concentrations of aluminium at a 1 mg/l loading after 7 and 28 days were 0.29 µg/L and 0.42 µg/L, respectively.
The dissolved concentrations of manganese at a 1 mg/l loading after 7 and 28 days were 10.66 µg/L and 8.91 µg/L, respectively.
Additional information
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