Registration Dossier
Registration Dossier
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EC number: 235-819-4 | CAS number: 12777-87-6
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
According to Guidance on information requirements and chemical safety assessment - Chapter R.7b: Endpoint specific guidance hydrolysis is defined as a decomposition or degradation of a chemical by reaction with water and is designed to provide information on abiotic degradation that can help in classification, persistence testing and in determining the fate of a substance in environmental surface waters. Hydrolysis is a common degradation route in the environment, where reaction of a substance with water with a net exchange of the X group with an OH at the reaction centre such that RX + H2O → ROH + HX.
Sulphuric acid, compound with graphite is an inorganic solid, consisting of natural graphite and variable amounts of intercalated sulphuric acid.
Sulphuric acid, compound with graphite does not contain water sensitive chemical bonds/groups that would suggest the ability to hydrolyse. The main component graphite does not undergo hydrolysis. The incorporated sulphuric acid is partially leached out by water and dissociates into the environmentally ubiquitous sulphate (SO42-) and hydronium (H3O+) ions. These ions cannot hydrolyse anymore.
Based on the chemical structure of sulphuric acid compound with graphite, degradation via hydrolysis is unlikely to occur and performance of a study to determine hydrolysis is considered to be scientifically not justified.
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.
