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EC number: 908-343-6
CAS number: -
An experimental determination of the adsorption/desorption potential of the reaction mass of calcium carbonate and calcium dihydroxide and calcium peroxide is not required due to the rapid hydrolysis and dissociation of the constituents present in this reaction mass. Instead, the behaviour of the degradation products is assessed based on available information.
As the reaction mass
of calcium carbonate and calcium dihydroxide and calcium peroxide
rapidly hydrolyses and dissociates in aqueous environment, the potential
of the thus formed chemical species to adsorb to soil and sediment is
hydrogen peroxide no remarkable adsorption to soil and sediment is
expected based on its high polarity and water solubility. An estimated
Koc value of 1.58 L/kg is available in the REACH registration dossier
for hydrogen peroxide. Furthermore, Mackay Level 1 modelling indicates
that the substance will partition into the aquatic compartment for > 99%
at 20°C, and that negligible fractions will be found in the air, soil or
the hydroxyl anions a Koc or Kd value is not relevant as the behaviour
of this anion depends on the buffer capacity of the receiving
the calcium cations measured Kd values ranging from 5.3 to 49.1 L/kg
were determined according to the REACH registration dossier for calcium
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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