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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The melting point of octadecyl isocyanate is 15.5°C.

Key value for chemical safety assessment

Additional information

There is no reliable data available for the test substance itself. But as results are present for one main constituents of the reaction mass (65%), this data is taken into account for further assessment as read-across approach. It is assumed that due to the similarity of the chemical structures of both main constituents the ecotoxicological hazards of the reaction mass can be described with data of one or both main components as a realistic approach.

The reaction mass of hexadecyl isocyanate and octadecyl isocyanate, as defined in section 1, consists of 35 % of hexadecyl isocyanate and 65 % of octadecyl isocyanate. The melting point of hexadecyl isocyanate is expected to be slightly lower as the melting point of octadecyl isocyanate due to a shorter carbon chain.

The Material Safety Data Sheet reported a freezing point of ca. 16°C for the reaction mass.

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