CHEMICAL SUBSTANCE DATASHEET
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CHEMICAL SUBSTANCE IDENTIFICATION |
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Chemical name |
Sodium Oxide |
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Synonyms |
Disodium oxide, Disodium monoxide [1] |
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IUPAC name |
disodium;oxygen(2-) [1], DISODIUM OXIDE Oxyde de sodium, Sodium hydroxide, SODIUM OXID [2] |
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CAS No |
1313-59-3, Disodium oxide [2, 4]. 12401-86-4, sodium oxide [3] |
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REACH registration number |
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EC No |
215-208-9, Disodium oxide [2] 235-641-7, sodium oxide [3] |
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Molecular formula |
Na2O |
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Substance group/chemical family |
Inorganic/alkali metal oxide |
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Appearance Physical state Odour Form Colour |
Solid Odourless crystalline: antifluorite (face centered cubic) crystal structure white |
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USES AND HANDLING ISSUES |
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Relevant identified uses |
This substance is manufactured and/or imported in the European Economic Area in 10 - 100 tonnes per year. It is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing. [2] Adsorbents and absorbents, finishing agents, graveling and road bed material, intermediates, ion exchange agents, process regulators, processing aids, specific to petroleum production, other industrial function; Air care products, building/construction materials not covered elsewhere, metal products not covered elsewhere, not known or reasonably ascertainable, paints and coatings, personal care products. [1] |
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Handling considerations |
Stored separated from strong acids and food and feedstuffs. Inhalation prevention by breathing protection and exhaust, skin prevention by gloves and protective clothing, eye prevention by face shield or eye protection in combination with breathing protection if powder, ingestion prevention by not eating, drinking or smoking during work [1] |
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PHYSICO-CHEMICAL PROPERTIES |
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Molecular weight |
61.979 g/mol [1, 4]. |
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Bulk density/Specific gravity |
2.3 g/cm³ [1, 4]. |
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pH |
the solution in water is a strong base [1] |
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EC |
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Melting point |
1275°C (sublimes) [1] |
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Boiling point |
1950 °C |
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Flash point |
non combustible |
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Flammability |
Not combustible but enhances combustion of other substances. [1, 4]. |
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Vapour density |
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Vapour pressure |
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Solubility in water |
reacts violently to form NaOH [1] |
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Solubility in organic solvents |
reacts with ethanol |
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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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Stability and reactivity |
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Chemical stability |
Stable. Reacts violently with water, acids and with many other compounds [7]. |
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Reactivity hazards |
Reacts violently with water producing sodium hydroxide. Decomposes at >400°C. This produces sodium peroxide and sodium. Attacks many metals in the presence of water [4]. |
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Corrosivity |
It reacts violently with acid and it is corrosive [1, 4]. |
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Polimerization |
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Incompatibility with various substances |
For fire fighting NO water. Use dry powder, dry sand [4]. |
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Special remarks on reactivity |
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Physical, chemical and biological coefficients |
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Koc |
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Kow |
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pKa |
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Henry-constant |
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ENVIRONMENTAL FATE AND BEHAVIOUR |
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Artificial pollution sources
Natural pollution sources |
Release to the environment of this substance can occur from industrial use: as processing aid, in the production of articles, in processing aids at industrial sites and as an intermediate step in further manufacturing of another substance (use of intermediates). Other release to the environment of this substance is likely to occur from: indoor use and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives) [5]. |
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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 |
Under test conditions no biodegradation observed [5] |
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Bioconcentration |
No potential for bioaccumulation [5] |
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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 Not suspected to be an environmental toxin [6] |
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Acute toxicity (LC50, EC50) |
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Aquatic systems Terrestrial systems |
No data available: testing technically not feasible [5] No hazard identified [5] |
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Chronic toxicity (NOEC, LOEC) |
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Aquatic systems Terrestrial systems |
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HUMAN HEALTH EFFECTS and PROTECTION |
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Routes of human exposures |
Inhalation, ingestion, skin, eye contact. [1, 4]. |
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General effects |
Serious by all routes of exposure. The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the aerosol may cause lung oedema. [1, 4]. |
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Endocrine disruption |
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Mutagenicity |
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Carcinogenicity |
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Reprotoxicity |
Classified as not expected to be potentially toxic or harmful in terms of organ system toxicity (non-reproductive) [6] |
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Teratogenicity |
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Skin, eye and respiratory irritations
Metabolism: absorption, distribution & excretion |
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the aerosol may cause lung oedema. [1, 4]. |
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Exposure limits |
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Drinking water MAC |
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Other information |
Genetic toxicity: No adverse effect observed (negative) (Toxicity – InVitro) (1 study: not feasible) [5] |
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Animal toxicity data |
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Acute toxicity (LD50) |
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Chronic toxicity (NOEL, LOEL) |
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ENVIRONMENTAL STANDARDS AND REGULATIONS |
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EINECS regulation |
235-641-7 [5, 7] |
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OSHA regulations etc.
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OTHER INFORMATION, SPECIAL REMARKS |
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CREATED, LAST UPDATE |
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09th of July, 2018 11th of July, 2018 |
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REFERENCES |
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[1] PUBCHEM - NIH, US National Library of Medicine, National Center for Biotechnology Information, Open Chemistry Database, Available from: https://pubchem.ncbi.nlm.nih.gov/compound/Sodium_oxide#section=Top, Accessed: 9th of July, 2018. [2] European Chemicals Agency (ECHA). Substance information. Available from: https://echa.europa.eu/hu/substance-information/-/substanceinfo/100.013.827, Accessed: 9th of July, 2018. [3] European Chemicals Agency (ECHA). Substance information. Available from: https://echa.europa.eu/hu/substance-information/-/substanceinfo/100.032.388, Accessed: 9th of July, 2018. [4] INCHEM - International Programme on Chemical Safety, Available from: http://www.inchem.org/documents/icsc/icsc/eics1653.htm, Accessed: 10th of July, 2018 [5] European Chemicals Agency (ECHA). Brief profile. Available from: https://echa.europa.eu/hu/brief-profile/-/briefprofile/100.013.827, Accessed: 10th of July, 2018. [6] EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry. https://www.ewg.org/skindeep/ingredient/723860/SODIUM_OXIDE/#.W0S6VtJLjcs, Accessed: 10th of July, 2018. [7] Chemical Book, Sodium oxide, Available from: https://www.chemicalbook.com/ProductChemicalPropertiesCB7942374_EN.htm, Accessed: 10th of July, 2018. |
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