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Environmental fate & pathways

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No experimental data are available.

The distribution of menthols between aqueous solutions and air can be calculated from water solubility and vapour pressure. Thus a Henry’s law constants of 4.8 Pa.m3/mol (at 285 K) was obtained, indicating that menthol isomers are according to OECD 23 potentially volatile only under vigorous mixing conditions where the opportunity for water/air exchange is high.

The distribution between the organic phase of soil or sediment solids and water can be calculated from the octanol/water partitioning coefficient. Using KOCWIN (EPISUITE) as a calculation tool on the basis of log KOW = 3.15 a KOC value of 149 L/kg was estimated, indicating a high mobility in soil and sediment (classification scheme of McCall et al. (1981)) and a low sorption potential to soil organic matter.