1-butyl-5-[(4-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxonicotinonitrile

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

To 17 SEPTEMBER 2018 to 17 OCTOBER 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: Knudsen cell

Key result

Test no.:

#3

Temp.:

ca. 150 °C

Vapour pressure:

ca. 0.017 Pa

Key result

Test no.:

#2

Temp.:

ca. 135 °C

Vapour pressure:

ca. 0.003 Pa

Key result

Test no.:

#1

Temp.:

ca. 120 °C

Vapour pressure:

ca. 0.001 Pa

Conclusions:

For the test item 1-butyl-5-[(4-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-
oxonicotinonitrile, the following vapour pressures at 20°C and at 25°C were calculated from
the regression equation:
Table 10.1-b Results Test Item
Vapour pressure at 20°C: 7.02 * 10-10 Pa
Vapour pressure at 25°C: 1.76 * 10-09 Pa
The linear regression of log p vs. 1/T gave a correlation coefficient r of - 0.9936, showing
good repeatability and precision. Therefore, the determination is considered as valid.

Description of key information

According to OECD 104 resp. A.4 using the effusion method: Knudsen Cell.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

20 °C

Additional information

Vapour pressure at 20 °C: Vapour pressure at 25 °C:

7.02 * 10^-10Pa 1.76 * 10^-9Pa