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Diss Factsheets

Physical & Chemical properties

Boiling point

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Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2004
Report date:
2004

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: OECD 104
GLP compliance:
no
Type of method:
dynamic method
Remarks:
with nitrogen

Test material

Constituent 1
Chemical structure
Reference substance name:
3,4-dihydro-2H-pyran
EC Number:
203-810-4
EC Name:
3,4-dihydro-2H-pyran
Cas Number:
110-87-2
Molecular formula:
C5H8O
IUPAC Name:
3,4-dihydro-2H-pyran
Test material form:
liquid
Specific details on test material used for the study:
Analytical purity: 99.5 %

Results and discussion

Boiling point
Key result
Boiling pt.:
85.5 °C
Atm. press.:
1 013.25 hPa

Any other information on results incl. tables

Results:

Temperature

[°C]

Vapour pressure

gas saturation (measurement)

[hPa]

Vapour pressure

gas saturation (calculationa))

[hPa]

Aberration

[%]

2.11

301.6

30.174

-0.05

2.11

30.16

30.174

-0.05

11.28

50.22

50.167

0.10

17.75

70.23

70.206

0.03

25.04

100.4

100.43

-0.03

40.45

200.9

200.63

0.13

50.35

300.1

300.22

-0.04

64.10

500.5

501.16

-0.13

73.95

701.2

701.78

-0.08

85.59

1015.9

1014.57

0.13

85.49

---

1013.25

---

The regression of the results leads with a mean deviation of 0.06 % to the following equation:

ln (p/bar) = 9.3948 - 2870.32 / (220.46 + t)

t in Celsius

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

The normal boiling temperature was obtained by intrapolation from the vapour pressure curve.

Applicant's summary and conclusion