Registration Dossier
Registration Dossier
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EC number: 266-124-4 | CAS number: 66085-00-5
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Phototransformation in air is not relevant due to low vapour pressure (< 0.0001 Pa).
Key value for chemical safety assessment
Additional information
Experimental results on phototransformation of Glycerol monoisostearate (CAS 66085-00-5) are not available. Calculated values using AOPWIN v1.92 indicate that the substance will be rapidly photodegraded by reaction with hydroxyl radicals (Birkhofer, 2014). The composition of the substance includes the mono- di- and tri-glyceride of isostearate. For each of these forms, the iso-branching may be present as a methyl-, ethyl or propyl-branching, although the branching is always simple. For the calculation of the phototransformation only the methyl branching was considered since the calculation with QSAR (AOPWIN v1.92) revealed very similar or equal results for the branching types.The estimated half-lives for the main components of the substance range from 5.30 - 10.17 hours. However, due to the low vapour pressure (< 0.0001 Pa, SPARC v 4.6 calculation) the substance is not expected to exist in the atmosphere.
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