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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
And European Commission Regulation (EC) No. 440/2008, A.4.
Deviations:
no
GLP compliance:
yes
Remarks:
As described under § 19, German Chemical Law (ChemG), Annex 1 in the version of August 28, 2013
Other quality assurance:
other: No unforeseen circumstances were observed which might have affected the quality or integrity of the study.
Type of method:
dynamic method
Specific details on test material used for the study:
Expiry date: September 16, 2017
Storage conditions: Ambient temperature (10°C to 30°C), protected from light
Batch No.: 0900243308
Test no.:
#1
Temp.:
140.3 °C
Vapour pressure:
15.1 hPa
Test no.:
#2
Temp.:
154.4 °C
Vapour pressure:
25 hPa
Test no.:
#3
Temp.:
165.3 °C
Vapour pressure:
40 hPa
Test no.:
#4
Temp.:
181.4 °C
Vapour pressure:
70 hPa
Test no.:
#5
Temp.:
192.7 °C
Vapour pressure:
100 hPa
Test no.:
#6
Temp.:
204.2 °C
Vapour pressure:
150 hPa
Test no.:
#7
Temp.:
213.5 °C
Vapour pressure:
200 hPa
Test no.:
#8
Temp.:
227.5 °C
Vapour pressure:
300 hPa
Test no.:
#9
Temp.:
20 °C
Vapour pressure:
0.012 hPa
Remarks on result:
other: Extrapolated from the experimental data
Test no.:
#10
Temp.:
25 °C
Vapour pressure:
0.018 hPa
Remarks on result:
other: Extrapolated from the experimental data
Key result
Vapour pressure:
0.117 hPa
Remarks on result:
other: Extrapolated from the experimental data

The vapour pressure was measured with the dynamic method in the temperature range of 140°C to 228°C.

At approx. 160°C a discoloration from colourless and slightly yellow towards light yellowish brown started. At approx. 220°C the discoloration deepened to dark yellow/slightly brown.

After the maximum test temperature of 227.5°C was reached the vessel was allowed to cool down. At two temperature settings (200.2°C and 177.2°C, respectively) temperature equilibriums were established in order to verify that the test item's vapour pressure remained unchanged despicte discoloration. This was confirmed as the two additional values were in accordance with the previously measured values. The two additional values were not included in the calculation of Antoine constants.

The values for 20, 25 and 50°C are calculated using the Antoine constants A, B and C:

 T/°C  p/hPa  log (p/hPa) = A + B/(C+T[°C])
 20.0  1.2140E-02  A = 8.67842
 25.0  1.8276E-02  B = -3105.69
 50.0  1.1688E-01  C = 273.15

 

Conclusions:
The vapour pressure to Resorcinol Diacetate were extrapolated as 1.21 Pa at 20°C, 1.83 Pa at 25°C and 11.7 Pa at 50 °C.
Executive summary:

The vapour pressure of Resorcinol Diacetate was measured with the dynamic method in the temperature range of 140°C to 228°C.

The following vapour pressure values for the test item Resorcinol Diacetate were extrapolated from the experimental data (vapour pressure dynamic method):

 T/°C  p/hPa  p/Pa
 20  1.21 x 10-2  1.21
 25  1.83 x 10-2  1.83
 50  1.21 x 10 -1  11.7

Description of key information

The vapour pressure of Resorcinol Diacetate was measured with the dynamic method in the temperature range of 140°C to 228°C.

The following vapour pressure values for the test item Resorcinol Diacetate were extrapolated from the experimental data (vapour pressure dynamic method):

 T/°C  p/hPa  p/Pa
 20  1.21 x 10-2  1.21
 25  1.83 x 10-2  1.83
 50  1.17 x 10-1  11.7

Key value for chemical safety assessment

Vapour pressure:
1.83 Pa
at the temperature of:
25 °C

Additional information