Registration Dossier
Registration Dossier
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EC number: 279-087-4 | CAS number: 79135-87-8
Endpoint summary
Administrative data
Description of key information
Not harmful/toxic for aquatic life
Additional information
Adequate chronic toxicity data is not available for Optical Brightener 380, therefore the aquatic toxicity assessment and classification are based mainly on the short-term toxicity data available on Similar Substance 01. The usage of information on a structural analogous can be considered as suitable and appropriated; details on the approach followed are included in the document attached to the IUCLID section 13.
Optical Brightener 380 is a very water soluble substance, not rapidly degradable. In addition, it is characterized by a negative log Kow, indicating a low potential for bioaccumulation.
According to the CLP Regulation (EC) No 1272/2008, acute aquatic toxicity is normally determined using L(E)C50 data on fish, crustacean and/or an algal specie. Data is available for fish Cyprinus carpio, Daphnia magna and Desmodesmus subspicatus specie; these organisms cover a range of trophic levels and taxa and are considered as surrogate for all aquatic organisms.
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 on the three trophic levels suggest that Optical Brightener 380 is not harmful/toxic for aquatic life.
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