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EC number: 204-688-5 | CAS number: 124-19-6
The PNECs for the aquatic environment are derived from the lowest L(E)C50 observed in the available acute aquatic toxicity tests by applying the appropriate assessment factors. The lowest short-term L(E)C50 was for fish with a 96-hour LC50 value of 1.45 mg/l
PNEC STP was derived from the available study on microbial respiration inhibition study giving a NOEC of 36.1 mg/L by applying an assessment factor of 10. The PNEC secondary poisoning was derived from the available information on repeated dose toxicity of 14.3mg/kg bw/day by applying an assessment factor of 90. For Soil and sediment PNECs, wet weight PNECs were calculated with using equilibrium partitioning as described in Guidance R.10 & R.16, conversion to dry weight was performed with factor of 4.6 (1.13 soil).
Environmental classification and labelling of a substance is generally based on data from short-term aquatic toxicity results, the ready biodegradability of the substance and an experimentally determined BCF (or if absent the measured octanol/water partition coefficient). Available adequate chronic toxicity data is also relevant for the assessment of long-term aquatic hazards (Regulation 286/2011/EC).
Short-term aquatic toxicity data is available for all three trophic levels. The lowest short-term L(E)C50 was for fish with a 96-hour LC50 value of 1.45 mg/l. Chronic aquatic toxicity data is only available for algae; the 72-hour NOEC is 0.759 mg/L (using the number of cells/mL, the average specific growth rate, or the area under the growth curve). Nonanal is readily biodegradable and has a log Kow of 3.8.
Based on the above data, nonanal is classified as R51/53 according to Directive 67/548/EEC (DSD) and Aquatic Chronic 3 (H412) according to the CLP Regulation 1272/2008/EC & adaptation 286/2011/EC.
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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