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EC number: 701-366-0 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
F-DIOX potassium salt is a organic carboxylic acid derivative.
The evaluation of toxic properties for the aquatic environment of F-DIOX potassium salt is based on the Read Across with cC6O4 ammonium salt (CAS no: 1190931-27-1) by virtue of similarity of chemical structure between the two substances.
F-DIOX potassium salt and cC6O4 ammonium salt are two salts of the same carboxylic acid, they differ only for the cationic part (K+ in F-DIOX potassium salt and NH4+ in cC6O4 ammonium salt). F-DIOX potassium salt readily dissolves in aqueous media and dissociates to the corresponding carboxylic acid in equilibrium with its anion. The dissociation is expected to be similar for F-DIOX potassium salt and cC6O4 ammonium salt.
It is known that a potential significant contributor to the observed aquatic toxicity ofammonium salts of fluorinated carboxylic acids is the un-ionized ammonia present at the equilibrium in the aqueous solution. Therefore the proposed read across can be considered a worse case approach since the cationic part is the potassium salt.
Three different experimental studies for aquatic toxicity were performed on cC6O4 ammonium salt: a toxicity study to aquatic algae, a short-term toxicity study to aquatic invertebrates and a short-term toxicity to fish.
All studies were performed under GLP conditions.
According to Regulation CE 1272/08, classification for Aquatic Toxicity shall be based on the ErC50 [= EC50 (growth rate)] found in the toxicity study to aquatic algae. In circumstances where the basis of the EC50 is not specified or no ErC50 is recorded, classification shall be based on the lowest EC50 available.
According to Regulation CE 1272/08, value of ErC50 / EC50 / LC50 = 100 mg/l is the cut-off value to identify a substance as non-toxic for the aquatic environment.
The results of the experimental studies indicate that C6O4 ammonium salt surely does not have toxic properties for the aquatic environment since all studies reported NOEC >= 100 mg/l dry salt.
Considering the discussed above it can be concluded that F-DIOX potassium salt does not possess toxic properties for the aquatic environment.
Impurities present in F-DIOX potassium salt do not affect the toxic properties for the aquatic environment of the substance.
Basing on the considerations above discussed, according to Regulation 1272/2008, F-DIOX potassium salt would indicate the following:
Classification: not required
Signal word: none indicated
Hazard statement: none indicated
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