Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Short term toxicity: fish

Two reliable acute toxicity studies performed with the Pigments Yellow 12, 83, representative for the Diarylide Yellow are available. As predicted by the read-across hypothesis, for all three tested pigments consistently no toxicity towards fish has been found in any of these OECD 203 studies with nominal concentrations well above the solubility limit.

Short term toxicity: aquatic invertebrates

Two reliable studies on the acute toxicity towards invertebrates (equivalent to OECD 202 and according to OECD 202) for Pigment Yellow 12 and 13 are available. For both pigments consistently, no toxicity toDaphnia magnacould be found in the tests. Nominal concentrations far above the solubility limit of the pigments had been applied. Therefore, the Diarylide Yellow Pigments are to be regarded as acutely nontoxic to invertebrates.

Long term toxicity: aquatic invertebrates

No toxicity of Pigments Yellow 13 and 83 was found in reliable OECD 211-tests (Daphnia magna

Reproduction Test) with nominal concentrations well above the solubility limit. Therefore, the Diarylide Yellow Pigments are to be regarded as chronically nontoxic to invertebrates.

Toxicity to algae

For the assessment of toxicity of the Diarylide Yellow Pigments towards aquatic plants two reliable studies on Pigment Yellow 12 and on Pigment Yellow 83 had been performed. For all studies with nominal pigment concentrations far above the solubility limit no toxicity towards algae could be observed. Judging from these experimental results the Diarylide Yellow Pigments are to be regarded as nontoxic to aquatic plants / algae.

 Toxicity to aquatic micro organisms

To assess the possible impact of the Diarylide Yellow Pigments on sewage treatment plant microbial activity, a reliable Activated Sludge Respiration Inhibition Test for Pigment Yellow 13 is available. At a pigment concentration far above the solubility limit, no respiration inhibition was observed (≥ 80% of the control).

Additional information