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Vapour pressure

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Description of key information

Use of a QSAR to predict the vapor pressure.

Key value for chemical safety assessment

at the temperature of:
25 °C

Additional information

Annex VII of REACH states that " The study does not need to be conducted if the melting point is above 300 °C. If the melting point is between 200°C and 300°C, a limit value based on measurement or a recognised calculation method is sufficient". Even though the test item has no melting point and no boiling point because it decomposes before, a value modelized by a well known QSAR model has been provided here.

Vapour pressure at 25 °C of 1.13 x 10-14Pa

(according to Grain modified) for Basid Red 1 monohydrochloride. The expected vapour pressure of the ionic salt Sepisol Fast Red SN should be therefore even lower at 25 °C (below 1.15 · 10 -10 Pa) and well below the lowest experimentaly measurable value.