Registration Dossier

Diss Factsheets

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.