Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Acute toxicity

Toxicity to aquatic algae and cyanobacteria

Read-Across: WoE, FF6,D. subspicatus, OECD 201, GLP, 72 h, ErC50 = 315 mg/l

Read-Across: WoE, Zn, P. subcapitata, 72 h, ErC50 = 0.53 mg/L, 4.305 mg/L, 10.25 mg/L (values converted to the target substance considering the Zn content of 20 %)

Read-across: WoE, Zn,Chlorella sp., 72 h, ErC50 = 0.55 mg/L, ErC10 = 0.14 mg/L, LOEC = 0.22 mg/L, NOEC = 0.1 mg/L (values converted to the target substance considering the Zn content of 20 %)

Short-term toxicity to aquatic Invertebrates

Read-Across: WoE, FF6, OECD 202, GLP, D. magna, 48 h, EC50 = 4400 mg/L

Read-Across: WoE, Blancolen, OECD 202, GLP, D. magna, 48 h, EC50 = > 100 mg/L, NOEC = 100 mg/L

Read-Across: WoE, Zn ion, D. magna, 48 h, EC50 = 0.655 mg/L (converted to the target substance taking into account the Zn content of 20 % at the most)

Read-Across: WoE, Zn ion, D. magna, 48 h, EC50 = 1.77 mg/L (converted to the target substance taking into account the Zn content of 20 % at the most)

Since the zinc concentration in TP 1646 is below 25 %, no classification for acute toxicity is required for the target substance in accordance with Regulation (EC) No 1272/2008.

Chronic toxicity

As in the case of acute toxicity, algae appear to be the most sensitive species with NOEC of 20 µg/L for Chlorella sp. (Johnson 2007). The maximum concentration of zinc ion in TP 1646 is 20 %. Since the zinc concentration in TP 1646 is below 25 %, classification for chronic toxicity category 2 is triggered for the target substance in accordance with Regulation (EC) No 1272/2008.

Additional information