Registration Dossier
Registration Dossier
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EC number: 930-930-0 | CAS number: -
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
- Endpoint:
- bioaccumulation in aquatic species: fish
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
Bioaccumulation is not relevant for both calcium hydroxide and calcium peroxide. On the one hand, calcium hydroxide dissociates in calcium and hydroxyl ions, so there will be no intake of calcium hydroxide as such, nor will calcium hydroxide prevail under its original form in the organisms. On the other hand, calcium peroxide hydrolyses to hydrogen peroxide. Hydrogen peroxide is reactive and short-lived polar substance and no bioaccumulation is expected. Also the estimated log Kow of about -1.5 indicates negligible potential of bioconcentration in aquatic organisms. BCFs calculated according to the TGD for fish and earthworm are low, 1.4 and 3.3, respectively. - Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
Description of key information
Data waiving (study scientifically not necessary): Bioaccumulation is not relevant for both calcium hydroxide and calcium peroxide. On the one hand, calcium hydroxide dissociates in calcium and hydroxyl ions, so there will be no intake of calcium hydroxide as such, nor will calcium hydroxide prevail under its original form in the organisms. On the other hand, calcium peroxide hydrolyses to hydrogen peroxide. Hydrogen peroxide is reactive and short-lived polar substance and no bioaccumulation is expected. Also the estimated log Kow of about -1.5 indicates negligible potential of bioconcentration in aquatic organisms. BCFs calculated according to the TGD for fish and earthworm are low, 1.4 and 3.3, respectively.
Key value for chemical safety assessment
Additional information
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