Registration Dossier
Registration Dossier
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EC number: 232-146-8 | CAS number: 7789-18-6
Endpoint summary
Administrative data
Description of key information
Additional information
Abiotic degradation / hydrolysis
In accordance with REACH Regulation (EC) No. 1907/2006 Annex XI, section 1.1.1, the performance of a test for hydrolysis as function of pH is scientifically unjustified. The study does not need to be conducted as cesium nitrate completely dissociates in water forming a cesium cation and the corresponding nitrate anion. Both, the cation and the anion are stable in the aquatic environment. The dissociation constant of cesium nitrate was not determinable because the test item is a strong electrolyte.
Biotic degradation
Biodegradation in water: screening test
In accordance with column 2 of REACH Regulation (EC) No. 1907/2006, Annex VII, section 9.2.1.1 tests on biodegradation in water: screening test do not need to be conducted as cesium nitrate is an inorganic compound.
Biodegradation in water and sediment
In accordance with column 2 of REACH Regulation (EC) No.1907/2006, Annex IX , section 9.2.1.2, 9.2.1.4 and Annex XI, section 1, tests on biodegradation in water and sediment are scientifically not justified and do not need to be conducted as cesium nitrate is an inorganic compound which dissociates completely in water and has a low log Pow. Neither direct nor indirect exposure is expected.
Biodegradation in soil
In accordance with column 2 of REACH Regulation (EC) No. 1907/2006, Annex IX, section 9.2.1.3, tests on biodegradation in soil do not need to be conducted as cesium nitrate is an inorganic compound with a low log Pow. Also, there is neither direct nor indirect exposure of the soil compartment expected.
Bioaccumulation
In accordance to column 2 of REACH Regulation 1907/2006/EC Annex IX section 9.3.2, the Bioconcentration Factor (BCF) does not need to be determined as cesium nitrate is expected to have a low potential for bioaccumulation. The estimated log Pow value for cesium nitrate is expected to be ≤ 0 due to its salt character and good water solubility. Therefore no testing on bioaccumulation is needed.
Bioaccumulation in aquatic/sediment
In accordance with column 2 of REACH Regulation 1907/2006/EC Annex IX section 9.3.2, the Bioconcentration Factor, BCF does not need to be determined as cesium nitrate is expected to have a low potential for bioaccumulation (very low log Kow value expected (consequently < 3)). The estimated log Pow value for cesium nitrate is expected to be ≤ 0 due to its salt character and good water solubility. Therefore no testing on bioaccumulation in aquatic/sediment is needed.
Transport and distribution (Adsorption/desorption)
In accordance to column 2 of REACH Regulation No. 1907/2006 Annex VIII, section 9.3.1, the test on adsorption/desorption screening does not need to be conducted, because with the physico-chemical properties of cesium nitrate a low adsorption potential is to be expected.
The estimated log Pow value for cesium nitrate is expected to be ≤ 0 due to its salt character and good water solubility.
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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