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Description of key information

The substance is acutely toxic to aquatic organisms.

Additional information

Short-term toxicity to fish

The substance is acutely harmful to fish.

Lowest valid effect value:

96-h LC50 = 17 mg V/L (meas., filtered; OECD 203, Oncorhynchus mykiss)

Corrected for the molecular weight of vanadylhydrogenphosphate-hemihydrate (CAS no. 93280-40-1): 96-h LC50 = 58.2 mg/L

 

Long-term toxicity to fish

Lowest valid effect value:

30-d EC10 = 76 µg V/L (meas., two-generation fish test: growth of second generation; Jordanella floridae)

Corrected for the molecular weight of vanadylhydrogenphosphate-hemihydrate (CAS no. 93280-40-1): 30-d EC10 = 259 µg/L

 

Short-term toxicity to aquatic invertebrates

The substance is acutely toxic to aquatic invertebrates.

Lowest valid effect value:

48-h EC50 = 658 µg V/L (meas., filtered; OECD 202, Daphnia magna)

Corrected for the molecular weight of vanadylhydrogenphosphate-hemihydrate (CAS no. 93280-40-1): 48-h EC50 = 2.2 mg/L

 

Long-term toxicity to aquatic invertebrates

14-week NOEC = 560 µg V/L (nom; population dynamics Daphnia magna, ephippia production)

Corrected for the molecular weight of vanadylhydrogenphosphate-hemihydrate (CAS no. 93280-40-1): 14-week NOEC = 1905 µg/L

 

Toxicity to aquatic algae and cyanobacteria

The substance is acutely toxic to aquatic algae and cyanobacteria.

Lowest valid effect values:

72-h ErC50 = 2907 µg V/L (meas.; OECD 201, Desmodesmus subspicatus)

72-h ErC10 = 716 µg V/L (meas.; OECD 201, Desmodesmus subspicatus)

Corrected for the molecular weight of vanadylhydrogenphosphate-hemihydrate (CAS no. 93280-40-1): 72-h ErC50 = 9888 µg/L; 72-h ErC10 = 2435 µg/L

 

Toxicity to microorganisms

The inhibition of the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriately low concentrations.

Lowest valid effect value:

3-h EC20 > 100 mg test material/L (nom., CAS 6523289-5; OECD 209, activated sludge of a predominantly domestic sewage)