Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Reliable, acute aquatic toxicity studies of tripotassium hexacyanocobaltate according to OECD guidelines are available for three trophic levels: algae, invertebrates and fish indicating a low potential for toxicity with the majority of endpoints being above the OECD limit of 100 mg/L of acute toxicity tests.

- A 48-h EC50 (mobility) > 100 mg/L tripotassium hexacyanocobaltate (nominal, analytically verified) for D. magna determined in a OECD 202 key study.

- A 96-h LC50 > 100 mg/L tripotassium hexacyanocobaltate (nominal, analytically verified) was determined for D. rerio in a OECD 203 key study. The low toxic potential was confirmed confirmed for O. mykiss in a supporting study (96h-LC50 = 112.9 mg/L, nominal).

-A 72-h ErC10 and 72-h ErC50 (growth rate) of 33.35 and 87.59 mg/L tripotassium hexacyanocobaltate (nominal, analytically verified), respectively, were determined for R. subcapitata in a OECD 201 key study.

Reagrding to toxicity to aquatic microrganisms, 3-h EC10, EC50 and NOEC values were estimated with > 1000, > 100 and ≥ 1000 mg/L tripotassium hexacyanocobaltate, respectively in a key study, an activated sewage sludge respiration inhibition test according to OECD 209.

In sum, tripotassium hexacyanocobaltate appears to have a low potential for acute aquatic toxicity.

Additional information