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Environmental fate & pathways

Henry's Law constant

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Description of key information

Henry's law constant 1.495E-004 to 2.961 Pa-m3/mol (HENRYWIN v.3.20, Group estimation)
Henry's law constant 1.22E-009 to 0.245 Pa-m3/mol (HENRYWIN v.3.20, Bond estimation)

Key value for chemical safety assessment

Additional information

No studies investigating the Henry's law constant of 2 -isocyanatoethyl methacrylate or its degradation products are available.

As these studies are not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance or its degradation product, no further testing is considered necessary.

However, to estimate PNECsoil by the equilibrium partitioning method, the Henry's law constant was calculated for 2-isocyanatoethyl methacrylate and its degradation products. Therefore, the Henry's law constants were calculated using the QSAR HENRYWIN v.3.20 (Hopp, 2012). The obtained Henry’s law constants range from 1.495E-004 to 2.961 Pa -m3/mol based on group estimation and from 1.22E-009 to 0.245 Pa -m3/mol on bond estimation, for 2-isocyanatoethyl methacrylate and its degradation products. The results indicate that evaporation from water into the atmosphere is either unlikely or is expected to be very slow.