Registration Dossier
Registration Dossier
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EC number: 231-442-4 | CAS number: 7553-56-2
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to soil microorganisms
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Reference
Description of key information
Iodine naturally occurs in soil and the average iodine concentration in soils is 5.85 ppm (mg/kg) but has been shown to vary between 1.5 –13.5 ppm. The weathering of rock, volcanic activity, decay of vegetation, iodine deposited in rainfall, and human activities all contribute to the deposition of iodine in soil. (ATSDR review of iodine, 2004) Therefore soil micro-organisms involved in the breakdown and transformation of organic matter in soils will already be exposed to background levels of iodine. Studies in two invertebrate species (earthworms and micro-arthropods) and also a chronic plant study have been provided. The submitted information is considered to give sufficient data on the terrestrial hazards of iodine in order to derive a PNECsoil, and therefore a soil micro-organism study is considered to be scientifically unjustified.
Key value for chemical safety assessment
Additional information
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.
