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EC number: 220-912-4
CAS number: 2935-90-2
Methyl 3-mercaptoproprionate was considered a non-sensitiser in a mouse
local lymph node assay (Harlan Laboratories, Ltd, 2010). Stimulation
indices (SI) were 2.87, 2.14 and 2.44 for 5, 10 and 25% methyl
3-mercaptoproprionate (in 4:1 acetone/olive oil), respectively.
No data have been found concerning respiratory sensitisation and there
are no indications that methyl 3-mercaptoproprionate is a respiratory
There is sufficient evidence to indicate that methyl
3-mercaptoproprionate is not a skin sensitiser and no classification is
warranted for this endpoint under EU Dir. 67/548/EEC or GHS/CLP.
Although there are no data on respiratory sensitisation, there is no
evidence that classification is warranted for this endpoint under EU
Dir. 67/548/EEC or GHS/CLP.
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