Registration Dossier
Registration Dossier
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EC number: 235-406-9 | CAS number: 12220-06-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no exposure of sediment expected
Sediment (marine water)
- Hazard assessment conclusion:
- no exposure of sediment expected
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Adequate chronic toxicity data are not available for Acid Orange 067, therefore the aquatic toxicity assessment and classification are based mainly on the short-term toxicity data available.
The substance was tested for toxicity potential on fish (guppy), Daphnia magna and Lemna gibba. No acute toxicity (i.e. L(E)C50) was recorded in none of the experiments conducted, up to the higher concentration reached in the tests. Acid Orange 067 not rapidly degradable, however it has a log Kow lower than 4 (indicating a low potential for bioaccumulation).
The outcomes from the short-term tests performed on the three trophic levels suggest that is not harmful/toxic for aquatic life.
The test substance resulted to be no harmful-toxic for activated sludge and not negatively impacting the microorganism activity; thus, it is deemed to be not able to affect the sewage treatment plants systems function.
Direct releases to air and/or sediment and/or soil are considered to be not relevant, on the basis of the substance usages describe into the IUCLID section 3.3; in addition, the physicochemical properties support the expectation of low relevance of the mentioned compartments.
The primary source of possible substance environmental release is represented by industrial waste waters; however, the available data showed that the substance can be efficiently removed by the STP, due to physical adsorption to sludge. Thus the possible releases into environment are expected to be limited.
Conclusion on classification
Adequate chronic toxicity data are not available; Acid Orange 067 results to be more or less soluble in water-base solutions, depending on the ions concentration; it is not readily biodegradable and has a negative log kow.
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 higher concentration reached in the tests; 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 Acid Orange 067 is not harmful/toxic for aquatic life.
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