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: 231-900-3 | CAS number: 7778-18-9
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Given the extensive and continued use of calcium sulfate as a fertiliser and for chemical treatments of soils and its natural occurrence in the environment, it is considered that calcium sulfate would not have a detrimental effect on soil microorganisms.
Key value for chemical safety assessment
Additional information
Calcium sulfate, calcium and sulfate ions are ubiquitous in the environment. Calcium is an important constituent of most soils and the minerals found in soil are mostly compounds of calcium with other substances. Furthermore, calcium sulfate, as Gypsum, is used as an inorganic fertiliser to improve soil quality. Important applications include:
• for the reclamation of sodic soils through ion exchange (calcium replacing sodium)
• to reduce run-off water and its resulting erosion in dry agricultural areas as an ameliorant for acidic subsoils and soils in forestry
• to improve Ca- and S-nutritional elements in agriculture (rape and cereals)
• Gypsum is also useful as an additive for soils with high levels of sodium
Sulfur-reducing bacteria comprise several groups of bacteria that use sulfate as an oxidizing agent. Calcium sulfate is not toxic to these forms of bacteria and since it is used to enhance the quality of soil, it is expected that calcium sulfate would not be toxic to soil microorganisms.
Given the extensive and continued use of calcium sulfate as a fertiliser and for chemical treatments of soils and its natural occurrence in the environment, it is considered that calcium sulfate would not have a detrimental effect on soil microorganisms.
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.
