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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1998-10-09 to 1998-10-19
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes
Type of method:
effusion method: vapour pressure balance
Temp.:
25 °C
Vapour pressure:
< 0 hPa
Remarks on result:
other: Estimated vapour pressure value.

A study was performed to measure the vapour pressure of the test substance with a vapour pressure balance. The maximum temperature of the test was limited to 120 °C because DSC showed an exothermal effect at 140 °C. No increase in weight and therefore no vapour pressure of the test substance was registered with the balance in the temperature range between 22 °C and 120 °C.

The vapour pressure of the test substance up to 120 °C was below the lower measuring limit of the vapour pressure balance.

The vapour pressure value at 25 °C is below 10E–05 hPa.

Conclusions:
The vapour pressure of Reactive Navy FC63805 up to 120 °C was below the lower measuring limit of the apparatus. The vapour pressure at 25 °C is stimated < 10E-5 hPa.
Executive summary:

A study was performed to determine the vapour pressure of the test substance according to EU method A.4. in compliance with GLP using the effusion method (vapour pressure balance).

The vapour pressure was measured in the temperature range of 22 to 120 °C. Higher temperatures have not been assessed as the measurement in a closed glass pan shows an exothermal effect at 140 °C. In this range of 22 – 120°C the vapour pressure was below the lower detection limit of 10-5hPa.

The vapor pressure of Reactive Navy FC63805 for 25 °C is below 10-5hPa

Description of key information

A study was performed according to EU method A.4 in compliance with GLP. The vapour pressure of Reactive Navy FC63805 was found to be < 10E-05 hPa at 25°C.

Key value for chemical safety assessment

Vapour pressure:
0 hPa
at the temperature of:
25 °C

Additional information

The vapour pressure of the substance was determined using the effusion method/vapour pressure balance measuring the quantity of substance leaving a cell per time. As a precaution a differential scanning calorimetry run was performed. There was an exothermic effect at 140 °C so the maximum temperature was limited to 120 °C.

The vapour pressure up to 120 °C was below the lower measuring limit of the apparatus. The vapour pressure for 25 °C is < 10E–05 hPa.