Registration Dossier
Registration Dossier
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EC number: 236-715-1 | CAS number: 13466-20-1
Endpoint summary
Administrative data
Description of key information
Additional information
Barium bis(dihydrogen orthophosphate) is an inorganic phosphate. Biotic degradation is therefore not relevant for the substance. Furthermore abiotic degradation processes like photolysis in air, water and soil are not likely. In water, soil and biological systems, dissolved barium bis(dihydrogenorthophosphate) dissociates preliminary to phosphate species and barium ions. In all environmental compartments barium and phosphorus are present in the most stable oxidation states (as Ba+2 and P+5). Both ions do not undergo oxidation-reduction transformation under normal environmental conditions. Removal of barium and phosphorous from environment compartments is a function of abiotic transformation and chemical cycling, e.g. hydrolysis, precipitation, suspension, leaching, uptaking and releasing of animals and plants, etc. (ATSDR, 2007).
As elements barium and phosphorus are persistent in environment. Barium tends to form mainly insoluble barium sulphate or barium carbonate that will be removed from the water column by precipitation. Phosphorus can be biologically removed from waste water via biological processes e.g. by the uptake of phosphate by microorganisms into their cells either through anaerobic or anaerobic pathways. The phosphate will thus be removed from the STP process as a result of sludge wasting.
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.
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