2-Naphthalenol, heptyl-1-[2-[3-methyl-4-[2-(3-methylphenyl)diazenyl]phenyl]diazenyl]-

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

GLP compliance:

yes

Type of method:

effusion method: Knudsen cell

Test material

Test material information

Constituent 1

Reference substance name:

Reaction products of 3-Methylaniline with heptyl naphthalen-2-ol

Cas Number:

1619917-05-3

Molecular formula:

Not applicable (UVCB Substance)

IUPAC Name:

Reaction products of 3-Methylaniline with heptyl naphthalen-2-ol

Test material form:

solid

Specific details on test material used for the study:

Batch number: 78-231-15

Results and discussion

Vapour pressure

Vapour pressure 1

Test no.:

#1

Temp.:

33.5 °C

Vapour pressure:

0.021 Pa

Vapour pressure 2

Test no.:

#2

Temp.:

36.5 °C

Vapour pressure:

0.026 Pa

Vapour pressure 3

Test no.:

#3

Temp.:

45.9 °C

Vapour pressure:

0.052 Pa

Vapour pressure 4

Test no.:

#4

Temp.:

52.6 °C

Vapour pressure:

0.121 Pa

Vapour pressure 5

Test no.:

#5

Temp.:

59.8 °C

Vapour pressure:

0.281 Pa

Vapour pressure 6

Test no.:

#6

Temp.:

67.2 °C

Vapour pressure:

0.42 Pa

Vapour pressure 7

Test no.:

#7

Temp.:

74.8 °C

Vapour pressure:

0.61 Pa

Vapour pressure 8

Test no.:

#8

Temp.:

82.6 °C

Vapour pressure:

0.98 Pa

Any other information on results incl. tables

Since the analysis was conducted under high vacuum conditions, the heat could be transferred only by radiation, this caused a consistent difference between the furnace temperature and the sample one and a considerable time for the system to reach equilibrium.

The temperatures reported (registered by the thermocouple under the Knudsen cell) are hence different from the one set and the mass loss has been measured only in 80 minutes time interval within each isotherm, after the system had reached equilibrium.

The values obtained at 57.2°C has not been used for calculation because not in line with the other values.

Applicant's summary and conclusion

Conclusions:

The vapour pressure of the test item is 0.00476 Pa at 20°C (extrapolated value).