Registration Dossier
Registration Dossier
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EC number: 231-891-6 | CAS number: 7775-19-1
Endpoint summary
Administrative data
Description of key information
Additional information
Sodium metaborate was determined to be a white odourless crystalline solid. The melting point for sodium metaborate was > 500 °C. The relative density of sodium metaborate is 1779 kg/m3 at 20 ºC. Sodium metaborate is water soluble (30.02 % w/w at 20 ºC). Sodium metaborate is not flammable, is not a pyrophoric or self-heating substance and emits no flammable gases on contact with water. Sodium metaborate is not a candidate for classification as a corrosive substance of UN Class 8, Packing group III (according to the UN Transport of Dangerous Goods Recommendations). Sodium metaborate had a mean particle size distribution d50 of 376.266 μm. Sodium metaborate 4 mol tech which has a particle size (d50 mm) of 0.321 did not produce significant amounts of dust and was classed as nearly dust free. This sample represents the most representative and the finest grade placed on the market.
The dissociation constant for sodium metaborate as such cannot be determined.
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