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EC number: 236-337-7
CAS number: 13308-51-5
Boron orthophosphate (CAS 13308-51-5) is an
inorganic phosphate substance. Biotic degradation is therefore not
relevant for the substance. Furthermore abiotic degradation of the
substance as such is an irrelevant process for inorganic substances that
are assessed on an elemental basis. In all environmental compartments
boron and phosphorus are present in the most stable oxidation states (as
B+3 and P+5). Both ions do not undergo oxidation-reduction
transformation under normal environmental conditions. Removal of boron
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.
As elements boron and phosphorus are
persistent in environment. Boron compounds normally will be degraded or
transformed to boric species and borates, the main compounds of
ecological significance (Sprague 1972), which both show remarkable
stability in natural aquatic systems. The chemical form of boron found
in water is dictated by pH and other constituents (Sprague 1972).
Orthophosphate is available for biological
metabolism without further breakdown. Besides of chemical precipitation
phosphate can be biologically removed from waste water. Biological
phosphate removal process is relies upon microorganisms to uptake
phosphate into their cells either via anaerobic or anaerobic pathways,
which is subsequently removed from the STP process as a result of sludge
Hem, J. D. (1970). Study and interpretation
of the chemical characteristics of natural water, 2d ed. U. S.
Geological Survey Water-Supply Paper 1473.
Maier, K. J., and A. W. Knight (1991). The
toxicity of waterborne boron to Daphnia magna and Chironomus decorus and
the effects of water hardness and sulfate on boron toxicity. Arch.
Environ. Contam. Toxicol. 20: 282-287.
Sprague, R. W. (1972) The ecological
significance of boron. U. S. Borax Research Corporation, Anaheim,
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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