Registration Dossier

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:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)
Type of method:
dynamic method

Test material

Constituent 1
Chemical structure
Reference substance name:
1,10-dichlorodecane
EC Number:
218-489-6
EC Name:
1,10-dichlorodecane
Cas Number:
2162-98-3
Molecular formula:
C10H20Cl2
IUPAC Name:
1,10-dichlorodecane
Test material form:
liquid

Results and discussion

Vapour pressureopen allclose all
Key result
Test no.:
#1
Temp.:
ca. 20 °C
Vapour pressure:
1.59 Pa
Key result
Test no.:
#2
Temp.:
ca. 25 °C
Vapour pressure:
2.37 Pa
Vapour pressure at 50°C (if relevant for classification of gas under pressure)
Key result
Vapour pressure:
14.5 Pa

Any other information on results incl. tables

1                      Results

1.1                  Thermal Stability

The DSC run in a closed glass crucible under an inert atmosphere is shown in Figure 2. An exothermic effect with an energy release of approx. -10 J/g was observed in the temperature range of 160 °C – 190 °C. The test was terminated at 300 °C.

Table1:         Results of the DSC-measurements on thermal stability

No.

Sample weight / mg

Start of effect / °C

Energy / J/g

Remarks

PN14472

12.71

160 (exothermic)

-10

Figure 2

1.2                  Dynamic method: Vapour-liquid equilibrium (VLE)

The vapour pressure was measured in the temperature range of 146.1 °C to 211.5 °C. The measured vapour pressure values together with the measured temperatures are listed in Table2:

Table2:         Results of the dynamic method

No.

Temperature / °C

Vapour pressure / hPa

Remark

1

146.1

20

measured up

2

162.3

40

measured up

3

182.6

80

measured up

4

119.9

120

measured up

5

199.6

210

measured up

6

160.1

205

measured down

7

99.8

190

measured down

8

59.9

175

measured down

Figure3 shows the vapour pressure as a function of the inverse temperature 1/T.

At a temperature of approx. 180° Ca pale yellow discoloration was observed. The values of the vapor pressure curve are nevertheless reproducible.

From the measured data points of the vapour pressure curve the constants A, B and C of the Antoine equation

can be derived by regression (Microsoft Excel) of the data points to

A = 10.5431 ,

B = -3031.93 ,

C = 273.15 .

 

The vapour pressure of the test item1,10-Dichlorodecanecalculated by extrapolation of the measured vapour pressure curve for the temperatures 20 °C, 25 °C, and 50 °C, according to Regulation EC 440/2008 Method A.4.Vapour Pressureand OECD Test Guideline 104 (2006) are shown in Table3:

Table3:         Calculated vapour pressure values for 20 °C, 25 °C, and 50 °C

Temperature / °C

Vapour pressure / Pa

20

1.59

25

2.37

50

14.50

Due to an exothermic effect before the boiling of the test item it cannot be excluded that thematerial properties have changed.

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the test item 1,10-Dichlorodecane was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 °C, 25 °C and 50 °C, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006):
Temperature / °C Vapour pressure / Pa
20 1.59
25 2.37
50 14.50




Due to an exothermic effect before the boiling of the test item it cannot be excluded that the material properties have changed.
Executive summary:

The vapour pressure of the test item1,10-Dichlorodecanewas calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 °C, 25 °C, and 50 °C, according to Regulation EC 440/2008 Method A.4.Vapour Pressureand OECD Test Guideline 104 (2006):

Temperature / °C

Vapour pressure / Pa

20

1.59

25

2.37

50

14.50

Due to an exothermic effect before the boiling of the test item it cannot be excluded that thematerial properties have changed.