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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Environmental fate & pathways

Biodegradation in soil

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The biodegradation is defined as the biologically mediated degradation or transformation of chemicals usually carried out by microorganisms. (Guidance on information requirements and chemical safety assessment - Chapter R.7b: Endpoint specific guidance)
According to column 2 of Annex IX (standard information requirements for substances manufactured or imported in quantities of 100 tonnes or more) of Regulation (EC) No 1907/2006 a simulation study on biodegradation in soil does not need to be conducted if direct and indirect exposure of soil is unlikely.
Production, handling and use of the substance only take place at a small number of industrial sites with low probability of any significant release from products.
Sulphuric acid, compound with graphite is an inorganic solid, consisting of natural graphite and variable amounts of intercalated sulphuric acid.
Graphite is a naturally occurring solid substance which is insoluble in water. Due to its physico-chemical properties it is not systemically and biologically available and does not cross biological membranes. In the aquatic compartment it can be considered as an inert substance.
Biologically mediated degradation or transformation of graphite carried out by microorganisms is therefore unlikely to occur.
The intercalated sulphuric acid is partially leached out by water and dissociated into the environmentally ubiquitous sulphate and hydronium ions.
Given the inherent properties of sulphuric acid, compound with graphite and the unlikelihood of exposure of soil to sulphuric acid, compound with graphite, testing of biodegradation is considered not to be necessary and is not required under Regulation (EC) No 1907/2006 (REACH).

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