Fatty acids, tall-oil, compds. with triethanolamine

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 12 June 2017 to 20 September 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Version / remarks:

2009

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

2006

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Version / remarks:

1996

Deviations:

no

GLP compliance:

yes

Type of method:

effusion method: isothermal thermogravimetry

Specific details on test material used for the study:

melting range: -19.9°C to 50.6°C

Key result

Temp.:

20 °C

Vapour pressure:

<= 0.001 Pa

Key result

Temp.:

25 °C

Vapour pressure:

<= 0.003 Pa

Table: Results of the isothermal TGA analysis (test item)

 

Temperature [°C]	Weight loss [µg/min]	vT [g/cm2/h]	log vT	log PT	PT [Pa]
90	2.45026	2.92 E-4	- 3.53	0.53	3.4
	2.52562	3.01 E-4	- 3.52	0.55	3.5
100	3.96161	4.73 E-4	- 3.33	0.79	6.2
	4.71527	5.63 E-4	- 3.25	0.89	7.7
110	8.98268	1.07 E-3	- 2.97	1.24	17.0
	10.2687	1.23 E-3	- 2.91	1.31	21.0
120	15.8594	1.89 E-3	- 2.72	1.55	36.0
	18.5374	2.21 E-3	- 2.66	1.64	43.0

 

Conclusions:

The vapour pressure of the substance at 20°C was determined to be ≤ 1.4E-3 Pa.
The vapour pressure of the substance at 25°C was determined to be ≤ 2.7E-3 Pa.

Executive summary:

The vapour pressure of the substance was determined using the isothermal thermogravimetric effusion method in a GLP study according to EC A.4, OECD 104 and OPPTS 830.7950.

A vapour pressure curve was constructed from duplicate measurements at 90°C, 100°C, 110°C and 120°C. The vapour pressure of the substance at 20°C and 25°C was calculated by extrapolation to be 1.4E-3 Pa and 2.7E-3 Pa. Since the weight losses of the test item were obtained with a temperature program of above the melting temperature of the test item, the vapour pressure of the test item could be slightly overestimated. The vapour pressure of the substance at 20°C and 25°C was therefore reported as ≤ 1.4E-3 Pa and ≤ 2.7E-3 Pa, resp.

NOTE: Any of data in this dataset are disseminated by the European Union on a right-to-know basis and this is not a publication in the same sense as a book or an article in a journal. The right of ownership in any part of this information is reserved by the data owner(s). The use of this information for any other, e.g. commercial purpose is strictly reserved to the data owners and those persons or legal entities having paid the respective access fee for the intended purpose.

Description of key information

The vapour pressure of the substance at 20°C and 25°C was therefore reported as ≤ 1.4E-3 Pa and ≤ 2.7E-3 Pa, resp.

Key value for chemical safety assessment

Vapour pressure:

0.003 Pa

at the temperature of:

25 °C