Bis(neodecanoyloxy)dioctylstannane

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Not reported.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

A non-GLP study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive and the study conducted in accordance with standardised guidelines.

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

Qualifier:

according to guideline

Guideline:

other: OECD 113 (Screening Test for Thermal Stability and Stability in Air)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Deviations:

no

GLP compliance:

not specified

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

effusion method: vapour pressure balance

Key result

Test no.:

#2

Temp.:

20 °C

Vapour pressure:

0 Pa

Key result

Test no.:

#2

Temp.:

25 °C

Vapour pressure:

0 Pa

Key result

Test no.:

#3

Temp.:

50 °C

Vapour pressure:

0.001 Pa

Thermal Stability

An exothermic effect, with a power of -50 J/g, was seen in the temperature range of 160 - 220 °C.

Vapour Pressure

The measured vapour pressure for the temperature range of 28 - 69 °C are outlined in Table 1. The calculation of the vapour pressure was carried out with an average molar mass of 764.05 g/mol.

Table 1: Results

No.	Temperature (°C)	Vapour pressure (Pa)
1	28	0.00265
2	33	0.00385
3	38	0.00525
4	43	0.00738
5	48	0.00983
6	53	0.0103
7	59	0.0139
8	64	0.0161
9	69	0.0197

The vapour pressure was plotted against the inverse temperature (see Figure 1) and the constants A and B of the Antoine equation, which were calculated to be 6.5707 and -2753.19, respectively.

Vapour pressures at temperatures of 20, 25 and 50 °C were then calculated by inter- and extrapolation of the measured vapour pressue curve. Table 2 outlines the results:

Table 2: Vapour Pressure Values

Temperature (°C)	Vapour pressure (Pa)
20	0.0015
25	0.0022
50	0.011

Conclusions:

Under the conditions of the study, the vapour pressure of the test material at temperatures of 20 be 9.3 x 10^-5 pa

Executive summary:

The thermal stability of the test material was determined in accordance with the standardised guideline OECD 113. Following investigation by Differential Scanning Calorimetry, an exothermic event was observed at temperatures between 160 and 220 °C with an energy of -50 J/g. Subsequently, the vapour pressure of the test material was determined in accordance with standardised guidelines EU Method A.4, OECD 104 and EPA OPPTS 830.7950 using the effusion (vapour pressure balance) method. Under the conditions of the study, the vapour pressure of the test material at temperatures of 20 to be 9.3 x 10^-5

Key value for chemical safety assessment

Vapour pressure:

0.001 Pa

at the temperature of:

20 °C