Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Scientifically acceptable method

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report Date:
2001

Materials and methods

Test guideline
Qualifier:
no guideline available
GLP compliance:
no
Type of method:
dynamic method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Name of test material (as cited in study report): 1-(4-Methylphenyl)-ethylamin
Analytical purity: >98.3 %

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
0.214 hPa
Remarks on result:
other: calculated from the regression equation
Temp.:
25 °C
Vapour pressure:
0.319 hPa
Remarks on result:
other: calculated from the regression equation
Temp.:
50 °C
Vapour pressure:
1.87 hPa
Remarks on result:
other: calculated from the regression equation

Any other information on results incl. tables

Results:

Temperature [°C] Vapour Pressure [hPa] Aberration [%]
  Measurement Calculation  
40,51 1,01 1,009 0,1
49,14 1,78 1,781 -0,06
59,95 3,46 3,458 0,07
66,70 5,10 5,102 -0,04
72,74 7,11 7,118 -0,12
79,40 10,11 10,117 -0,07
93,41 20,15 20,171 -0,11
102,26 30,21 30,219 -0,03
114,15 50,33 50,230 0,2
122,56 70,44 70,368 0,1
131,99 100,71 100,637 0,07
151,77 200,36 200,161 0,1
164,67 300,44 300,801 -0,12
182,31 500,97 501,312 -0,07
195,02 701,44 703,116 -0,24
209,50 1008,05 1005,968 0,21

The regression of the results leads with a mean deviation of 0.46 % to the following equation:

ln (p/bar) = 10.1213-4201.45/(206.22+t)

The vapour pressure at 20 °C, 25°C and 50 °C was calculated from the regression equation.

The normal boiling temperature was obtained by intrapolation/extrapolation from the vapour pressure curve.

Applicant's summary and conclusion