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Melting point / freezing point

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Description of key information

Freezing point < -20 °C (as solution in heptane).
No further testing is required.

Key value for chemical safety assessment

Additional information

An experimental study is available, conducted as a limit test without the scope of a guideline, but scientifically acceptable and sufficient for purpose. Therefore it is considered fully reliable and a key study. As no crystallisation was observed down to -20°C, the result is expressed as a limit value, and cannot be retained as key data.

Note that the result applies to the substance as manufactured, i.e. solution of dtBHP in n-heptane.