1,2,3-propanetriyl tris[12-(acetoxy)octadecanoate]

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 Jan 2018 to 16 Feb 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

11 July 2006

Deviations:

no

GLP compliance:

no

Other quality assurance:

other: ISO 9001:2015

Type of method:

effusion method: isothermal thermogravimetry

Specific details on test material used for the study:

- Appearance: Viscous amber liquid (determined by CharlesRiver Den Bosch)
- Purity/Composition: >85%
- Test item storage: At room temperature

Additional information
- Test Facility test item number: 209080/A
- Purity/Composition correction factor: No correction factor required
- Test item handling: No specific handling conditions required
- Molecular structure: Not indicated
- Molecular formula: C63H116O12
- Molecular weight: 1065.6

Key result

Temp.:

20 °C

Vapour pressure:

< 0 Pa

Representative weight loss curves of the test item and benzo(ghi)perylene are shown in Figure 4 and Figure 5. The results are given in Table 3.

During both measurements no significant weight lost was observed. A log pversus1/T curve for the test itemin the range of 210°C and 240°C could not be determined. The coefficient of correlation (r) was < 0.99 (data is archived in the raw data).

The weight losses were compared with the results of benzo[ghi]peryleneat the same temperatures. Theweight loss curve of this reference substance is shown in Figure 5.

Table 3: Results of the Vapour pressure Isothermal TGA Analysis

Temperature [°C]	Weight loss [µg/min]	νT [g/cm^2/h]	logνT	logPT	PT [Pa]
200	0.156195	1.86´10^-5	-4.73	-0.92	0.12
	0.106634	1.27´10^-5	-4.90	-1.13	0.074
210	0.151155	1.80´10^-5	-4.74	-0.94	0.12
	0.0979314	1.17´10^-5	-4.93	-1.18	0.067
220	0.146704	1.75´10^-5	-4.76	-0.95	0.11
	0.0850913	1.02´10^-5	-4.99	-1.25	0.056
230	0.159461	1.90´10^-5	-4.72	-0.91	0.12
	0.135725	1.62´10^-5	-4.79	-0.99	0.10

With both analyses the weight loss of the test item was lower than the weight loss ofbenzo[ghi]perylene. Based on this, the vapour pressure of the test item is reported inTable 4to be below that of this reference substance.

Table 4: Vapour Pressure of the Test Item

	20°C		25°C
	[Pa]	[mm Hg]	[Pa]	[mm Hg]
Test item	< 1.3´10^-8	< 1.0´10^-10	< 7.2´10^-8	< 5.4´10^-10

Conclusions:

The vapour pressure of the test substance was determined to be < 1.3E-8 Pa at 20 °C, under the conditions of the test.

Executive summary:

In this guideline (OECD 104) study, the vapour pressure of the test substance was determined to be 1.3E-8 Pa at 20 °C.

Description of key information

Study conducted to recognised testing guidelines [with GLP certification].

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

20 °C