Registration Dossier
Registration Dossier
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EC number: 300-346-5 | CAS number: 93925-43-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Key results for classification
Degradation
Biodegradation: not readily biodegradable: 11-12% (CO2 evolution; OECD 301B) after 28 d
Bioaccumulation
Not assumed to be of significant potential for bioaccumulation.
Aquatic acute toxicity
Fish: 96 h, LL50 (Cyprinus carpio): > 100 mg/L (nominal)
Aquatic invertebrates: 48 h, EL50 (Daphnia magna): > 100 mg/L (nominal)
Aquatic algae: 72 h, ErL50 (Pseudokirchneriella subcapitata): > 100 mg/L (nominal)
Aquatic chronic toxicity
Fish: no data available
Aquatic invertebrates: no data available
Aquatic algae: 72 h, NOErLR (Pseudokirchneriella subcapitata): ≥ 100 mg/L (nominal)
No effects on aquatic organisms were recorded in the available studies. Thus, the substance is not classified for aquatic acute and chronic toxicity according to the consolidated version of Regulation (EC) No 1272/2008 (01.01.2017) and all further amendments (ATPs).
Silicic acid (H4SiO4), tetraethyl ester, reaction products with bis(acetyloxy)dioctylstannane would be rapidly hydrolyzed to dioctyltin dichloride (DOTC), ethanol, acetic acid and silicium dioxide. However, under neutral conditions in the aquatic environment, it is highly expected that Silicic acid (H4SiO4), tetraethyl ester, reaction products with bis(acetyloxy)dioctylstannane would be directly hydrolyzed to dioctyltin hydroxide. Thus, the harmonized classification of DOTC (Chronic Aquatic 3, H412) is not relevant for the classification of Silicic acid (H4SiO4), tetraethyl ester, reaction products with bis(acetyloxy)dioctylstannane.
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