Registration Dossier
Registration Dossier
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EC number: 235-285-2 | CAS number: 12158-74-6
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to terrestrial plants, other
- Remarks:
- short- and long-term
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Justification for type of information:
- REPORTING FORMAT FOR THE ANALOGUE APPROACH
For further information please refer to read across justification in IUCLID section 13. - Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
- Reason / purpose for cross-reference:
- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
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- read-across source
- Key result
- Remarks on result:
- other: Individual high quality NOEC/(L(E)C10 values from different studies range between ranging from 18 mg/kg for Hordeum vulgare to 698 mg/kg for Lycopersicon esculentum.
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The plant effect records include 67 high quality single-species chronic NOEC/EC10 values covering monocotyle and dicotyle plants including agricultural and wild species belonging to 9 different species and 5 different families.
Reference
Description of key information
The plant effect records include 67 high quality single-species chronic NOEC/EC10 values covering monocotyle and dicotyle plants including agricultural and wild species belonging to 9 different species and 5 different families. The retained NOECs are carried forward to the terrestrial PNEC derivation in a WoE approach.
Key value for chemical safety assessment
Additional information
Data are available on a number of substances containing inorganic copper and read-across is justified on the basis that for the purposes of assessing the ecotoxicology of dicopper hydroxide phosphate the chemical species of interest is copper. As such studies referring to soluble copper ions from any source are considered to be directly relevant to dicopper hydroxide phosphate. Dicopper hydroxide phosphate is considered to contribute to copper toxicity in the environment and as such the data assessment and risk assessment focusses on the copper ion as the phosphate ion is not considered to be toxic.
NOECs for plants
The plant effect records include 67 high quality single-species chronic NOEC/EC10 values covering monocotyle and dicotyle plants including agricultural and wild species belonging to 9 different species and 5 different families: Polygonum convolvulus– family of the Polyonaceae; Lycopersicon esculentum– family of the Solanaceae; Hordeum vulgare, Avena sativa, Pao annua– family of the Poaceae; Senecio vulgaris, Andryala integrifolia, Hypochoeris radicata– family of the Asteraceae; Lolium perenne– family of the Gramineae. The retained NOECs are carried forward to the terrestrial PNEC derivation in a WoE approach.
Individual high quality NOEC/(L(E)C10 values from different studies range between ranging from 18 mg/kg for Hordeum vulgare to 698 mg/kg for Lycopersicon esculentum.
Important intra-species variability in NOEC/L(E)C10 values are observed due to differences in the physico-chemistry of the soils. For plants, 2 models were developed (Rooney et al, 2004 and 2006): L. esculentum model (endpoint yield) and H. vulgare root elongation model. These models were used for the normalization of the plant NOEC data and the derivation of the PNEC.
Additional records are available on the influence of soil chemistry, soil ageing and soil leaching on the plant toxicity (Ginochio et al., 2006; Zhao et al., 2006).
Strandberg et al., 2006 further showed that plant community composition was significantly correlated with soil copper concentration and community composition at soil copper concentrations above 200 mg/kg differed significantly from community composition at lower copper levels.
The studies on soil attenuation, reported by Ma et al, 2006 and Ma et al, 2006b (see section adsorption/desorption) are also of relevance to the terrestrial plant PNEC. This information was used for the PNEC derivation relevant to monitoring data.
Additional information:
A voluntary risk assessment report of copper and copper compounds has been submitted to the European Chemicals Agency by the European Copper Institute (June 2008). This report is based on the industry initiative to perform a voluntary risk assessment on a substance according to the mechanisms of the implementation of the Existing Substance Regulation (EEC) No 793/93 (ESR). The procedure was agreed by the 11thJoint Meeting of the Competent Authorities for the Implementation of Directive 67/548/EEC and ESR Regulation. Italy has been acting as a reviewing Member State for the substance and the risk assessment report has been reviewed by the Technical Committee on New and Existing Substances (TC NES) according to standard operational procedures of the Committee.
In accordance with the above mentioned European copper risk assessment, the environmental hazard assessment is based on tests carried out with soluble copper species. Studies reporting quantitative dose responses of Cu(II) ions, delivered from soluble copper compounds to aquatic organisms are used for this assessment.
The data presented are considered to be adequate and reliable for the purpose of defining an appropriate classification for the ecotoxicity of dicopper hydroxide phosphate in accordance with Regulation (EC) No.1272/2008 (EU CLP).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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