Scandium oxide

Source of the photo: 
https://greenenergy24.com/2018/09/06/global-scandium-oxide-cas-12060-08-1-market/
Author of the description: 
Vaszita Emese

CHEMICAL SUBSTANCE DATASHEET

 

CHEMICAL SUBSTANCE IDENTIFICATION

Chemical name                 

Scandium oxide

Synonyms                           

Scandia

IUPAC name

oxygen(2-);scandium(3+) [8]

CAS No

12060-08-1

REACH registration number

pre-registered

EC No

235-042-0 

Molecular formula               

Sc2O3

Substance group/chemical family

 

Appearance

Physical state

Odour

Form  

    Colour

 

solid

no

powder [1], cubic crystals [2]

white [1]

USES AND HANDLING ISSUES

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]

Handling considerations

 

PHYSICO-CHEMICAL PROPERTIES

Molecular weight                                   

137.91 g/mol  [1]

Bulk density/Specific gravity

3.86 g/cm3 [2]

pH

 

Particle size

 

EC

 

Melting point

 2485 °C [2]

Boiling point

 1607° C  [3](predicted)

Flash point

 

Flammability

 

Vapour density

 

Vapour pressure

 

Solubility in water

insoluble [1]  

Solubility in organic solvents

 

Solubility in inorganic solvents

 

Hydrolysis

 

Ionicity in water

 

Surface tension

 

Dispersion properties

 

Specific surface

 

Stability and reactivity

Chemical stability

 

Reactivity hazards

 

Corrosivity

 

Polimerization

 

Incompatibility with various substances

 

Special remarks on reactivity

reacts with most acids upon heating to produce the expected hydrated product [2]

Physical, chemical and biological coefficient

Koc

 

Kow

 

pKa

 

log Kp

 2.97 (predicted) [6]

Henry-constant

 

ENVIRONMENTAL FATE AND BEHAVIOUR

Artificial pollution sources

 

General terrestrial fate

 

General aquatic fate

 

General atmospheric fate

 

General persistence and degradability

 

Abiotic degradation and metabolites

 

Biodegradation and metabolites

 

Bioconcentration

 

Volatilization

 

Photolysis

 

Hydrolysis

 

Soil adsorption and mobility

 

ENVIRONMENTAL CONCENTRATIONS

Measured data

 

 

 

ECOTOXICOLOGICAL INFORMATION

General adverse effects on ecosystem

Acute toxicity (LC50, EC50)

Aquatic systems

Data lacking [7]

Terrestrial systems

Data lacking [7]

Chronic toxicity (NOEC, LOEC)

Aquatic systems

Aquatic Chronic 4 (May cause long lasting harmful   effects to aquatic life). [5,7]

Terrestrial systems

Data lacking [7]

HUMAN HEALTH EFFECTS and PROTECTION

Routes of human exposures

 

General effects

 

Endocrine disruption

Data lacking [7]

Mutagenicity

Data lacking [7]

Carcinogenicity

Data lacking [7]

Reprotoxicity

Data lacking [7]

Teratogenicity

 Data lacking [7]

Skin, eye and respiratory irritations

Irritates skin, eye, lungs, affects blood clotting. [4, 5]

Metabolism:

absorption, distribution & excretion

 

Exposure limits

 

Drinking water MAC

 

 

Other information

According to the majority of notifications provided by companies to ECHA in CLP notifications no hazards have been classified. [5]

 

 

Animal toxicity data

Acute toxicity (LD50)

Data lacking [7]

Chronic toxicity (NOEL, LOEL)

Data lacking [7]

ENVIRONMENTAL STANDARDS AND REGULATIONS

EINECS regulation

on EC list ( REACH pre-registration)

OSHA regulations etc.

 

 

 

OTHER INFORMATION, SPECIAL REMARKS

Classification and proposed labelling with regard to toxicological data

 

 

 

CREATED, LAST UPDATE

Created

13th September, 2018

Last update

29th October, 2018

REFERENCES

[1] Chemical book, CAS Database list. https://www.chemicalbook.com/ChemicalProductProperty_EN_CB6197865.htm, Accessed: 13. 09. 2018

[2] US Research Nanomaterials, Inc, https://www.us-nano.com/inc/sdetail/33360, Accessed: 13. 09. 2018

[3] Scandium Oxide Market 2018 Global Analysis, Growth, Trends and Opportunities Research Report Forecasting to 2023, http://www.abnewswire.com/pressreleases/scandium-oxide-market-2018-global-analysis-industry-demand-trends-size-opportunities-forecast-2023_235411.html, Accessed: 13. 09. 2018

[4] Chemspider, Scandium oxide, Available from: http://www.chemspider.com/Chemical-Structure.118686.html?rid=e5007bec-7a86-4ad2-81b0-d0f772628a0b&page_num=0

[5] ECHA, Information on chemicals, Scandium oxide. Available from:  https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/..., Accessed: 13. 09. 2018

[6] US EPA, Chemistry Dashboard, Scandium oxide, Available from: https://comptox.epa.gov/dashboard/dsstoxdb/results?search=DTXSID1051224#properties, Accessed: 13. 09. 2018

[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.