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Diss Factsheets

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:
2013
Report date:
2013

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:
gas saturation method

Test material

Constituent 1
Chemical structure
Reference substance name:
Chlorodiphenylphosphine
EC Number:
214-093-2
EC Name:
Chlorodiphenylphosphine
Cas Number:
1079-66-9
Molecular formula:
C12H10ClP
IUPAC Name:
diphenylphosphinous chloride
Test material form:
other: liquid
Details on test material:
Name of test material (as cited in study report): Chlorodiphenylphosphine
Analytical purity: 95,7% by GC
Lot/batch No.: TP B37
Expiration date of the lot/batch: 2013-01-16

Results and discussion

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

Any other information on results incl. tables

Results:

Temperature
[°C]
Vapour Pressure
 [hPa]
Temperature
[°C]
Vapour Pressure
 [hPa]
  Saturator G   Saturator 3
56.3 0.0268 56.5 0.0325
56.2 0.0386 56.2 0.0332
41.3 0.0174* 41.4 0.0137
41.3 0.0215* 41.4 0.0171*
41.3 0.0108 41.5 0.0112
41.3 0.0132 41.3 0.0124
*: These values are not used for calculat1on of regression equation.

Vapeur pressures were calculated using a molar mass of 220.64 g/mol.

The regression of the vapour pressure data leads with a mean deviation of 9.3 % to the following results:

In (p/hPa) = 17.1677 -6784.90 / (T/K)

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

P20°C 2.5 X 10 -3 hPa (extrapolated)

P25°C 3.7 x 10 -3 hPa (extrapolated)

P50°C 2.2 X 10 -2 hPa (interpolated)

Applicant's summary and conclusion