Registration Dossier
Registration Dossier
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EC number: 200-813-2 | CAS number: 74-83-9
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Principal degradation products formed and identified were inorganic bromide ions and methanol (CH3OH). The major degradants of methyl bromide hydrolysis are described in European Commission Guidance Document SANCO/221/2000 – rev. 10 Final (February 25, 2003). This document defines inorganic compounds not containing a heavy metal and organic compounds of aliphatic structure, with a chain length of 4 or less (and which consist only of C, H, N, or O atoms and have no alerting structures) as degradation products of no concern. Thus inorganic bromide ions and methanol are considered to be degradation products of no concern and no additional data is required.
No identification of hydrolysis products, observation of rate constants, and estimation of DT50 values is appropriate for metabolites, degradation and reaction products of methyl bromide. Therefore, it is proposed that these points are not relevant to methyl bromide.
Key value for chemical safety assessment
Additional information
Data showed hydrolysis of methyl bromide in aqueous conditions. Major degradants of methyl bromide in aqueous solution were identified as methanol and inorganic bromide. Methane was detected in trace amounts and is considered a very minor degradant in this study.
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