1,10-dichlorodecane

Vapour pressure

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

Test material information

Constituent 1

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 pressure

Vapour pressure 1

Key result

Test no.:

#1

Temp.:

ca. 20 °C

Vapour pressure:

1.59 Pa

Vapour pressure 2

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.