Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29 March 2018 to 12 April 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
EC No 440/2008 30 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
23 March 2006
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: vapour pressure balance
Specific details on test material used for the study:
- Batch No.of test material: PFW160141
- Purity: 99.5%
- Expiration date of the lot/batch: 30 December 2018
- Stability under test conditions: Room temperature in the dark
Key result
Temp.:
25 °C
Vapour pressure:
28.6 Pa
Remarks on result:
other: extrapolated from 4 runs

Results

Recorded temperatures, mass differences and the resulting calculated values of vapor pressure are shown in the following tables:

Run 1

Table1– Vapor Pressure Data

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (µg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

-23

250.15

0.00400

266.12

2.6612e-07

0.36944

-0.43246

-22

251.15

0.00398

313.38

3.1338e-07

0.43505

-0.36146

-21

252.15

0.00397

368.91

3.6891e-07

0.51214

-0.29061

-20

253.15

0.00395

375.04

3.7504e-07

0.52065

-0.28345

-19

254.15

0.00394

397.96

3.9796e-07

0.55247

-0.25769

-18

255.15

0.00392

432.15

4.3215e-07

0.59993

-0.22190

-17

256.15

0.00390

543.71

5.4371e-07

0.75481

-0.12216

-16

257.15

0.00389

588.81

5.8881e-07

0.81742

-0.08755

-15

258.15

0.00387

627.15

6.2715e-07

0.87064

-0.06016

A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 1 gives the following statistical data using an unweighted least squares treatment.

Slope:

-2.91 x 103

Standard error in slope:

196

 

Intercept:

11.2

Standard error in intercept:

0.770

The results obtained indicate the following vapor pressure relationship:

Log10(Vp (Pa)) = -2.91 x 103/temp(K) + 11.2

The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 1.46.

Run 2

Table2– Vapor Pressure Data

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (µg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

-25

248.15

0.00403

234.41

2.3441e-07

0.32542

-0.48756

-24

249.15

0.00401

230.64

2.3064e-07

0.32019

-0.49459

-23

250.15

0.00400

247.61

2.4761e-07

0.34375

-0.46376

-22

251.15

0.00398

310.89

3.1089e-07

0.43159

-0.36493

-21

252.15

0.00397

315.20

3.1520e-07

0.43758

-0.35894

-20

253.15

0.00395

341.98

3.4198e-07

0.47476

-0.32353

-19

254.15

0.00394

401.52

4.0152e-07

0.55741

-0.25383

-18

255.15

0.00392

421.68

4.2168e-07

0.58540

-0.23255

-17

256.15

0.00390

532.37

5.3237e-07

0.73907

-0.13131

-16

257.15

0.00389

553.67

5.5367e-07

0.76864

-0.11428

-15

258.15

0.00387

630.89

6.3089e-07

0.87584

-0.05758

A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 2 gives the following statistical data using an unweighted least squares treatment.

Slope:

-2.93 x 103

Standard error in slope:

160

 

Intercept:

11.3

Standard error in intercept:

0.634

The results obtained indicate the following vapor pressure relationship:

Log10(Vp (Pa)) = -2.93 x 103/temp(K) + 11.3

The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 1.45.

Run 3

Table3– Vapor Pressure Data

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (µg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

-25

248.15

0.00403

205.25

2.0525e-07

0.28494

-0.54525

-24

249.15

0.00401

244.76

2.4476e-07

0.33979

-0.46879

-23

250.15

0.00400

251.27

2.5127e-07

0.34883

-0.45739

-22

251.15

0.00398

264.19

2.6419e-07

0.36676

-0.43562

-21

252.15

0.00397

314.38

3.1438e-07

0.43644

-0.36008

-20

253.15

0.00395

333.68

3.3368e-07

0.46323

-0.33420

-19

254.15

0.00394

361.34

3.6134e-07

0.50163

-0.29962

-18

255.15

0.00392

430.11

4.3011e-07

0.5971

-0.22395

-17

256.15

0.00390

464.08

4.6408e-07

0.64426

-0.19094

-16

257.15

0.00389

508.22

5.0822e-07

0.70554

-0.15148

-15

258.15

0.00387

565.96

5.6596e-07

0.78570

-0.10474

A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 3 gives the following statistical data using an unweighted least squares treatment.

Slope:

-2.76 x 103

Standard error in slope:

98.1

 

Intercept:

10.6

Standard error in intercept:

0.388

The results obtained indicate the following vapor pressure relationship:

Log10(Vp (Pa)) = -2.76 x 103/temp(K) + 10.6

The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 1.33.

Run 4

Table4– Vapor Pressure Data

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (µg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

-25

248.15

0.00403

199.18

1.9918e-07

0.27651

-0.55829

-24

249.15

0.00401

204.71

2.0471e-07

0.28419

-0.54639

-23

250.15

0.00400

224.87

2.2487e-07

0.31218

-0.50559

-22

251.15

0.00398

244.72

2.4472e-07

0.33973

-0.46887

-21

252.15

0.00397

299.60

2.9960e-07

0.41592

-0.38099

-20

253.15

0.00395

317.78

3.1778e-07

0.44116

-0.35540

-19

254.15

0.00394

419.33

4.1933e-07

0.58214

-0.23497

-18

255.15

0.00392

439.91

4.3991e-07

0.61071

-0.21416

-17

256.15

0.00390

462.26

4.6226e-07

0.64174

-0.19264

-16

257.15

0.00389

518.20

5.1820e-07

0.71939

-0.14304

-15

258.15

0.00387

586.64

5.8664e-07

0.81441

-0.08916

A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 4 gives the following statistical data using an unweighted least squares treatment.

Slope:

-3.23 x 103

Standard error in slope:

157

 

Intercept:

12.4

Standard error in intercept:

0.619

The results obtained indicate the following vapor pressure relationship:

Log10(Vp (Pa)) = -3.23 x 103/temp(K) + 12.4

The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of 1.59.

The values of vapor pressure at 25 °C extrapolated from each graph are summarized in the following table:

Table5            Summary of Vapor Pressure Data

Run

Log10[Vp(25 ºC)]

1

1.46

2

1.45

3

1.33

4

1.59

Mean

1.46

Vapor Pressure

28.60 Pa

The test item did not change in appearance under the conditions used in the determination

Conclusions:
The vapor pressure of the test item has been determined to be 28.6 Pa at 25 ºC.

Description of key information

A GLP-compliant study was performed to determine the vapour pressure according to OECD guideline 104 and EU Method A.4 without deviations (K1, Envigo, 2018). A vapour pressure of 28.6 Pa was determined at 25°C using the vapour pressure balance method.

Key value for chemical safety assessment

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

Additional information