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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Physical & Chemical properties

Vapour pressure

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Description of key information

Vapour pressure Indigo

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
100 °C

Additional information

The test substance is synthesized and handled as an aqueous sodium hydroxide solution only under inert gas atmosphere. It is instable as solid material on air and oxidises rapidly to indigo CAS 482-89-3. Data on indigo is presented below.

Indigo: < 3.5 x 10E-5 Pa at 100°C