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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
OECD Guidelines for the Testing of Chemicals, Section 1: Physical-Chemistry
Properties, Test No. 104: Vapour Pressure, 11-6-2006, OECD Publishing
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
Commission Regulation (EC) No 761/2009, A.4. Vapour Pressure,
23-7-2009,Official Journal of The European Union
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
effusion method: Knudsen cell
Specific details on test material used for the study:
The study does not mention details on the test material. However, only one test material was in use at that time. Thusthe identitiy of the test material can be concluded.
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
0 Pa
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
0 Pa
Test no.:
#3
Temp.:
50 °C
Vapour pressure:
0 Pa

Detailed results obtained in the measurement of the vapor pressures of Egge 2806-1 solid.

 Temperature (°C) Vapour pressure (Pa)
 79.58  2,094E-02
79.58   1,613E-02
 79.58  2,132E-02
 69.74  3,370E-03
 69.74  3,161E-03
 59.85  2,915E-03
 59.85  1,013E-03
   
Conclusions:
The vapour pressure of EGGE 2806-1, measured using the Knudsen cell method, is 3,64E-07 Pa at 20°C.
Executive summary:

From the results obtained in this work, in the measurement of the vapor pressures at different temperatures for a sample of Egge 2806-1 solid, the following conclusions can be drawn:

1. Based on the results, the vapor pressure of the compound is calculated as being equal to 3,6x 10-7 Pa (3,6 x 10-9 mbar) at 20 °C, and 1,4 x 10 -4 Pa (1,4 x 10-6 mbar) at 50 °C.

2. The vapor pressure of the compound can be calculated for additional temperatures, between approx. 10 °C to 100 °C, through the follow ing equation:

p (Pa) = exp (-18701.585/T (K) + 48.9700)

3. The application of the equation for temperatures outside the given temperature range, will undoubtedly produce values affected by an error in excess, i.e., the real vapor pressure will be lower than the values yielded by the equation.

Description of key information

The vapour pressure of EGGE 2806-1 (Reaction mass of 2-(3-{6-[3-(2-Hydroxyethyl)-3-methylureido]hexyl}-1-methylureido)ethanol and 6-[3-(2-Hydroxyethyl)-3-methylureido]hexylamino 3-(methylamino)propionate), measured using the Knudsen cell method, is 3.64E-07 Pa at 20°C.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information