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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Ecotoxicological information

Short-term toxicity to fish

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short-term toxicity to fish
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
Justification for type of information:
As the target substance hydrolyses rapidly (half-life < 30 minutes) the intrinsic properties are related to hydrolysis products of the target substance. This information is used as a supporting evidence on the toxicity of the target substance in CSA.
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
according to guideline
other: not specified
GLP compliance:
not specified
Analytical monitoring:
not specified
not specified
Test organisms (species):
Pimephales promelas
Test type:
Water media type:
Key result
96 h
Dose descriptor:
Effect conc.:
ca. 11 800 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Validity criteria fulfilled:
The 96 hr LC50 for triethanolamine was 11800 mg/L tested on Pimephales promelas.

Description of key information

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
11 800 mg/L

Additional information

No studies were conducted on the target substance, Tetrakis [[2,2',2"-nitrilotris[ethanolato]](1-)-N,O]zirconium. As the target substance hydrolyses rapidly (half-life < 30 minutes) the intrinsic properties are related to hydrolysis products of the target substance.

On the basis that if entering the environmental, this substance will quickly dissociate to form the inorganic (poorly soluble) zirconium dioxide and 2,2',2''-Nitrilotriethanol (triethanolamine). The zirconium dioxide is not considered further in this report as aquatic toxicity assessments do not apply.

Short-term toxicity studies of triethanolamine are well-investigated:

Fish: LC50 (96h), Pimephales promelas, was 11800 mg/l (Geiger, D.L. et al., 1985)

Invertebrates: EC50 (24h) Daphnia magna, was 1850 mg/l (Bringmann 1982)

Algae or cyanobacteria: EC50 (72h),Desmodesmus subspicatus, was 512 mg/l (Aman and Steinhaeuser, 1986)

Microorganisms: IC50 (3h), activated sludge, > 1000 mg/l (Klecka, et al. 1985).