CHEMICAL SUBSTANCE DATASHEET
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CHEMICAL SUBSTANCE IDENTIFICATION |
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Chemical name |
Scandium oxide |
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Synonyms |
Scandia |
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IUPAC name |
oxygen(2-);scandium(3+) [8] |
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CAS No |
12060-08-1 |
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REACH registration number |
pre-registered |
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EC No |
235-042-0 |
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Molecular formula |
Sc2O3 |
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Substance group/chemical family |
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Appearance Physical state Odour Form Colour |
solid no powder [1], cubic crystals [2] white [1] |
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USES AND HANDLING ISSUES |
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Relevant identified uses |
Scandium oxide is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material). Principal uses for scandium oxide are in solid oxide fuel cells (SOFC’s), high-strength aluminium alloys, high intensity metal halide lamps, electronics, and laser research. [3] |
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Handling considerations |
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PHYSICO-CHEMICAL PROPERTIES |
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Molecular weight |
137.91 g/mol [1] |
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Bulk density/Specific gravity |
3.86 g/cm3 [2] |
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pH |
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Particle size |
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EC |
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Melting point |
2485 °C [2] |
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Boiling point |
1607° C [3](predicted) |
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Flash point |
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Flammability |
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Vapour density |
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Vapour pressure |
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Solubility in water |
insoluble [1] |
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Solubility in organic solvents |
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Solubility in inorganic solvents |
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Hydrolysis |
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Ionicity in water |
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Surface tension |
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Dispersion properties |
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Specific surface |
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Stability and reactivity |
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Chemical stability |
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Reactivity hazards |
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Corrosivity |
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Polimerization |
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Incompatibility with various substances |
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Special remarks on reactivity |
reacts with most acids upon heating to produce the expected hydrated product [2] |
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Physical, chemical and biological coefficient |
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Koc |
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Kow |
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pKa |
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log Kp |
2.97 (predicted) [6] |
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Henry-constant |
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ENVIRONMENTAL FATE AND BEHAVIOUR |
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Artificial pollution sources |
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General terrestrial fate |
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General aquatic fate |
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General atmospheric fate |
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General persistence and degradability |
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Abiotic degradation and metabolites |
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Biodegradation and metabolites |
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Bioconcentration |
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Volatilization |
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Photolysis |
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Hydrolysis |
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Soil adsorption and mobility |
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ENVIRONMENTAL CONCENTRATIONS |
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Measured data |
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ECOTOXICOLOGICAL INFORMATION |
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General adverse effects on ecosystem |
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Acute toxicity (LC50, EC50) |
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Aquatic systems |
Data lacking [7] |
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Terrestrial systems |
Data lacking [7] |
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Chronic toxicity (NOEC, LOEC) |
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Aquatic systems |
Aquatic Chronic 4 (May cause long lasting harmful effects to aquatic life). [5,7] |
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Terrestrial systems |
Data lacking [7] |
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HUMAN HEALTH EFFECTS and PROTECTION |
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Routes of human exposures |
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General effects |
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Endocrine disruption |
Data lacking [7] |
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Mutagenicity |
Data lacking [7] |
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Carcinogenicity |
Data lacking [7] |
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Reprotoxicity |
Data lacking [7] |
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Teratogenicity |
Data lacking [7] |
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Skin, eye and respiratory irritations |
Irritates skin, eye, lungs, affects blood clotting. [4, 5] |
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Metabolism: absorption, distribution & excretion |
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Exposure limits |
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Drinking water MAC
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Other information |
According to the majority of notifications provided by companies to ECHA in CLP notifications no hazards have been classified. [5] |
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Animal toxicity data |
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Acute toxicity (LD50) |
Data lacking [7] |
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Chronic toxicity (NOEL, LOEL) |
Data lacking [7] | |
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ENVIRONMENTAL STANDARDS AND REGULATIONS |
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EINECS regulation |
on EC list ( REACH pre-registration) | |
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OSHA regulations etc. |
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OTHER INFORMATION, SPECIAL REMARKS |
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Classification and proposed labelling with regard to toxicological data |
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CREATED, LAST UPDATE |
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Created |
13th September, 2018 |
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Last update |
29th October, 2018 |
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REFERENCES |
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[7] ECHA, Information on chemicals, Scandium oxide. Available from: https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/notification-details/102320/838623, Accessed: 26. 10. 2018 [8]National Center for Biotechnology Information. PubChem Compound Database; CID=134661, https://pubchem.ncbi.nlm.nih.gov/compound/134661, Accessed 29. 10. 2018. |
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