Registration Dossier
Registration Dossier
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EC number: 235-790-8 | CAS number: 12737-27-8
Endpoint summary
Administrative data
Description of key information
Chromium iron oxide (CAS 12737-27-8) is an inorganic, black, odourless powder.
- The melting point is >1000 °C.
- relative density: 5.13.
- Physical particle size distribution: D10: 1.4 µm, D50: 2.9 µm, D90: 5.9 µm
- Dustiness.
Total dustiness: 31.04 mg/g
MMAD1 = 4.35 µm (20.0 %) , MMAD2 = 61.04 µm (80.0 %)
Geometric standard deviation of MMAD: GSD1 = 1.1, GSD 2 = 9.09
Fractional deposition in human respiratory tract: Head (ET): 51.0 %, Tracheobronchial (TB): 0.9 %, Pulmonary (PU): 2.00 %
- Transformation/Dissolution
Dissolution of Cr and Fe according to OECD 29 after 7 days at 100 mg loading and after 7 and 28 days at 1mg loading is below the L.O.D. (<0.5 µg/L) at pH 6.
Additional information
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