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Physical & Chemical properties

Vapour pressure

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Administrative data

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
yes (incl. QA statement)
Type of method:
dynamic method

Test material

Constituent 1
Chemical structure
Reference substance name:
Valeryl chloride
EC Number:
211-330-1
EC Name:
Valeryl chloride
Cas Number:
638-29-9
Molecular formula:
C5H9ClO
IUPAC Name:
pentanoyl chloride
Test material form:
liquid

Results and discussion

Vapour pressureopen allclose all
Key result
Temp.:
20 °C
Vapour pressure:
11.7 hPa
Remarks on result:
other: extrapolated
Key result
Temp.:
25 °C
Vapour pressure:
15.7 hPa
Remarks on result:
other: extrapolated
Key result
Temp.:
50 °C
Vapour pressure:
58.3 hPa
Remarks on result:
other: extrapolated
Vapour pressure at 50°C (if relevant for classification of gas under pressure)
Key result
Vapour pressure:
58.3 hPa

Any other information on results incl. tables

Results:

Temperature
[t/°C]
Vapour Pressure
[p/hPa]
  Measurement Calculation
29.17 19.94 19.942
36.66 29.92 29.930
46.77 49.88 49.891
53.88 69.86 69.831
61.84 99.74 99.675
78.82 199.7 199.58
89.79 299.6 299.91
104.78 499.6 499.98
115.49 699.8 700.10
127.81 1005.6 1004.62

The regression cf the results leads with a mean deviation cf 0.06 % to the following equation:

In(p/hPa) = 16.5594 - 3293.69 I (213.61 + t/°C)

The test item is liquid in the temperature range used for the vapour pressure measurements.

The vapour pressures at 20°C, 25°C and 50°C were calculated from the regression equation

Applicant's summary and conclusion