Reaction mass of hydroxyethyl-DETA, DETA and dihydroxyethyl-DETA

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: Knudsen cell

Key result

Test no.:

#1

Temp.:

303.2 K

Vapour pressure:

0.326 Pa

Key result

Test no.:

#2

Temp.:

318.2 K

Vapour pressure:

0.396 Pa

Key result

Test no.:

#3

Temp.:

333.2 K

Vapour pressure:

0.449 Pa

Table3‑a        Vapour Pressures (Effusion Method) of molecular mass of 103.168 g/mol

Experiment	T	Mean p	Stand. Dev. p	RSD p
No.	K	Pa	Pa	%
1	303.2	3.26E-01	5.33E-02	16.3%
2	318.2	3.96E-01	1.18E-01	29.9%
3	333.2	4.49E-01	1.31E-01	29.1%

In this table, E-0X represents multiplication with 10^-x.

Stand. Dev. = Standard Deviation; RSD = Relative Standard Deviation

The graph 1/T vs. log (P) shows a straight line with a correlation coefficient of - 0.9959.

For the test item hydroxyethyl-DETA-derivatives,

the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:

Vapour pressure at 20 °C:          2.91* 10^-01Pa

Vapour pressure at 25 °C:          3.10* 10^-01Pa

Conclusions:

the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 2.91 * 10-01Pa
Vapour pressure at 25 °C: 3.10 * 10-01Pa

Key value for chemical safety assessment

Vapour pressure:

0.29 Pa

at the temperature of:

20 °C