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Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Description of key information

4-Hydroxy-TEMPO is a orange solid in shape of flakes.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

Additional information

The appearance of 4-Hydroxy TEMPO is known from long experience with the substance as producer and cited in monographs. In several studies the appearance was adequately described.