Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 231-887-4 | CAS number: 7775-09-9
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
No EC50 or NOEC could be determined.
Key value for chemical safety assessment
Additional information
Three valid studies with terrestrial plants were found. The study performed by Backus (1991) was according to standard protocol (vegetative vigor) and under GLP conditions. Plants of several species were sprayed with a solution of sodium chlorate at just one concentration which gave a field rate of 39.0 g/m2(390 kg/ha), a concentration which is incidentally far greater than the recommended application rate as a herbicide. From day 4, necrosis was observed on all treated plants. After 11 days almost all treated plants were dead, corn appeared to be less affected. The fresh weight of oats was least effected, the treated weight was 61.1% of that of the control. Fiebig (2007B) performed a vegetative vigor test as well, according to OECD guideline under GLP conditions. She applied sodium chlorate at the start of the test on the foliage of several plant species.The lowest NOEC's of the test item were lower than 0.77 kg/ha (the lowest tested concentration) for several species. Fiebig (2007A) performed another test according to standard OECD protocol under GLP conditions. This was a seedling emergence test in which sodium chlorate was sprayed once onto the soil surface after the seeds of several plant species were sown. Sugar beet and carrot were the most sensitive species with a NOEL of 13.9 kg/ha.
These tests were performed for pesticides application of sodium chlorate. For general use of sodium chlorate this is most likely not the way seeds or plants will be exposed.
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.
