Registration Dossier
Registration Dossier
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EC number: 257-775-5 | CAS number: 52238-69-4
Endpoint summary
Administrative data
Description of key information
Not harmful/toxic for aquatic life.
Additional information
Adequate chronic toxicity data is not available for Direct Yellow 142, therefore the aquatic toxicity assessment and classification are based mainly on the short-term toxicity data available on the substance and on the structural analogues.
Direct Yellow 142 is very water soluble and it is not rapidly degradable; on the basis of the chemical structure characteristics and the negative log Kow (i.e. -3.31 at 20 °C), the substance is expected to be possess a low potential for bioaccumulation.
According to the CLP Regulation (EC) No 1272/2008, acute aquatic toxicity is normally determined using a fish 96-hour LC50, a crustacean species 48-hour EC50 and/or an algal species 72- or 96-hour EC50; nevertheless it is also specified in the Regulation that data on other species (e.g. Lemna spp.) shall also be considered if the test methodology is suitable.
The mentioned species cover a range of trophic levels and taxa and are considered as surrogate for all aquatic organisms. Data on Direct Yellow 142 and analogues is available for fish (Cyprinus carpio), invertebrates (Daphnia magna) and on aquatic plants (Lemna minor).
No L(E)C50 value was recorded at concentration equal/lower than 1 mg/l, thus the classification criteria for acute (short-term) aquatic hazard (category 1) of the CLP Regulation (EC) No 1272/2008 are not met.
In addition, no acute toxicity (i.e. L(E)C50) was recorded in none of the experiments conducted, up to the concentration of 100 mg/l; thus the classification criteria for long-term aquatic hazard (categories 2/3/4) of the CLP Regulation (EC) No 1272/2008 are not met.
In conclusion, the outcomes of the tests performed suggest that Direct Yellow 142 is not harmful/toxic for aquatic life.
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