Ammonium undecafluorohexanoate

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

12 - 18 May 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

not specified

GLP compliance:

yes

Type of method:

gas saturation method

Test no.:

#1

Temp.:

60 °C

Vapour pressure:

0.273 Pa

Test no.:

#2

Temp.:

70 °C

Vapour pressure:

0.739 Pa

Test no.:

#3

Temp.:

80 °C

Vapour pressure:

1.97 Pa

Key result

Test no.:

#4

Temp.:

25 °C

Vapour pressure:

0.004 Pa

Remarks on result:

other: calculated

Individual Results

Test results are shown as follows. No peak was detected at the peak position of test item in the analysis of trap solvent in the second trap and the blank.

 

Test Temperature (°C)	Flow Rate (mL/min)	Vapour Pressure (Pa)
		Measured	Average
60	20	2.97E-01	2.73E-01
60	30	2.69E-01
60	40	2.52E-01
70	20	8.21E-01	7.39E-01
70	30	6.71E-01
70	40	7.25E-01
80	20	1.92	1.97
80	30	2.18
80	40	1.83

Final result

Vapor pressure of test item Vapor pressure at 25°C was determined to be 4.47E-03 Pa.

 

Discussion

It is considered that the carrier gas was sufficiently saturated with the test item at each flow rate because three measured values at each temperature were very near. It is also considered that the measured vapor pressure was well-correlated to the test temperature because the regression equation obtained by plotting the logarithm of vapor pressure (log P) versus the reciprocal number of test temperature (1/T) was straight line. Therefore, it is concluded that the test results are acceptable.

Description of key information

Vapor pressure is 4.47E-03 Pa at 25 °C (gas saturation method, OECD 104).

Key value for chemical safety assessment

Vapour pressure:

0.004 Pa

at the temperature of:

25 °C