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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

TFSIH is not considered to be inherently biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
inherently biodegradable, not fulfilling specific criteria

Additional information

No degradation studies are available for TFSIH. Therefore, information from the structural analog TFSILi was used to evaluate the possible degradation of TFSIH.

Justification for read-accross: TFSILi is salt of TFSIH, so the basis chemical structure is the same.

Regarding physico-chemical properties both products show the same range of data: high water solubility, log kow, low vapour presure . . .

PHYSICO-CHEMICAL PROPERTIES

 

TFSILi

TFSIH

Boiling point

Decomposes before boiling point

173.9°C

Vapour pressure

< 0.000027 Pa at 25°C

30-50 Pa at 20-30°C

Water solubility

> 1000 g/L

800 g/L

Log Pow

-1.19

-0.771

Stability of test material at room temperature

strongly hygroscopic

strongly hygroscopic

 

OTHER PROPERTIES (if relevant for this endpoint)

- Adsorption characteristics: low potential of adsorption based on log kow

- Toxicity to aquatic organisms: Not harmful to daphnids and algae

Finally, toxicity on aquatic organisms is the same. Both products are not harmful to daphnids and algae.

There is adequacy assessment for the regulatory purposes of REACH.