Registration Dossier
Registration Dossier
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EC number: 269-093-5 | CAS number: 68187-40-6 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77364.
Endpoint summary
Administrative data
Description of key information
The pigment (Olivine, cobalt silicate blue) is an inorganic, intense violet, odourless, solid powder.
- Melting point > 1000 °C
- relative density: 2.338.
- Particle size distribution: d10 = 1 µm, d50 = 2.3 µm, d90 = 5.2 µm
- Dustiness:
total: 44.98 mg/g
MMAD= 4.72 µm, GSD= 2.34
Fractional deposition in human respiratory tract: Head (ET): 78.76 %, Tracheobronchial (TB): 2.21 %, Pulmonary (PU): 6.07 %
- The transformation/dissolution
The dissolved concentrations of cobalt at pH 6 and 1 mg/L loading after 7 and 28 days is 139 µg/L and 185 µg/L, respectively.
The dissolved concentrations of cobalt at pH 8 and 1 mg/L loading after 7 and 28 days is 44 µg/L and 52.5 µg/L, respectively.
The specific surface area(B.E.T. method) for the test sample used for HH and ENV testing was determined to be 2.3 ± 0.2 m²/g.
Additional information
Studies conducted in accordance with EU guidelines are available for: appearance, melting point, 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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
