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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

TPGDA is acutely harmful to aquatic algae.

Key value for chemical safety assessment

EC50 for freshwater algae:
65.9 mg/L
EC10 or NOEC for freshwater algae:
6.6 mg/L

Additional information

Considering the toxicity of Tripropylenglykoldiacrylate (TPGDA, CAS 42978-66-5) to aquatic algae, experimental data are available for fresh water.

A static non-GLP 72 -h test with Desmodesmus subspicatus was conducted according to the German standard DIN 38412 p 9 (similar to OECD 201). The 72-h ErC50 and the 72 -h EC10 were 65.9 and 6.6 mg/L respectively (nominal, BASF AG, 1988, Rep. no.:88/0671).

The substance was dissolved in chremophor (stock solution: 0.1%) prior to testing.

The test concentrations were not analytically verified.

However, the test concentrations are assumed to be stable over the exposure period based on a sufficient water solubility, a low Henry's Law constant (see IUCLID Ch. 5.4.2) and a low adsorption potential (log Kow = 2.7, measured, see IUCLID Ch.4.7; Log Koc = 3, worst-case, estimated, see IUCLID Ch. 5.4.1).

In conclusion, the substance with high probability is acutely harmful to aquatic freshwater algae.