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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

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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: guidline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report date:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
no
Type of method:
effusion method: vapour pressure balance

Test material

Constituent 1
Chemical structure
Reference substance name:
Methylurea
EC Number:
209-935-0
EC Name:
Methylurea
Cas Number:
598-50-5
Molecular formula:
C2H6N2O
IUPAC Name:
methylurea
Details on test material:
- Name of test material (as cited in study report): Methylharnstoff
- Analytical purity: pure
- Lot/batch No.: 369041AX20

Results and discussion

Vapour pressureopen allclose all
Temp.:
23.3 °C
Vapour pressure:
0.005 Pa
Remarks on result:
other: measured value
Temp.:
20 °C
Vapour pressure:
0.003 Pa
Remarks on result:
other: extrapolated value

Any other information on results incl. tables

Results in detail:

 

Temperatur

Druck(experimentell)

Druck (calculated)

Abw.

t/°C

p/hPa

p/hPa

%

20,0

--

3,11e-05a)

--

23,3

4,58e-05

4,71e-05

-2,74

23,3

4,84e-05

4,71e-05

2,78

33,3

1,53e-04

1,56e-04

-1,85

33,3

1,59e-04

1,56e-04

2,00

48,0

7,91e-04

7,84e-04

0,90

48,0

7,76e-04

7,84e-04

-1,01

50,0

--

9,65e-04b)

--

55,0

--

1,60e-03b)

--

58,5

2,20e-03

2,26e-03

-2,80

58,5

2,33e-03

2,26e-03

2,94

a) extrapolated value b) interpolated value

Applicant's summary and conclusion