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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Additional information

Short-term toxicity to aquatic invertebrates: Key study: results from a study report leading to the conclusion that the effective concentrations of Zirkonium-tetrakis(isobutyrato), were:

Parameter (in mg/L, loading rate):

EC50/24h: > WAF

EC50/48h: > WAF

EC100/24h: > WAF

EC100/48h: > WAF

EC0/24h (b): ≥ WAF

EC0/48h (b): ≥ WAF

(a) The WAF was obtained by preparing an aqueous extract from a “loading rate” of 100 mg (target value) Zirkonium-tetrakis(isobutyrate)per L reconstituted water.

(b) EC0 is identical with the NOEC

Toxicity to aquatic algae: key study in Selenastrum capricornutum: results from a study report leading to the conclusion that:

NOEC (0-72h) of Zirkonium-tetrakis(isobutyrate) ≥100 mg/L

EC50 (0-72h) of Zirkonium-tetrakis(isobutyrate) > 100 mg/L