A mixture of: thiobis(4,1-phenylene)-S,S,S',S'-tetraphenyldisulfonium bishexafluorophosphate; diphenyl(4-phenylthiophenyl)sulfonium hexafluorophosphate

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP-Guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2014

Report date:

2014

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

yes

Type of method:

other: thermal analysis and a modified Siwoloboff method

Test material

Test material information

Constituent 1

Reference substance name:

A mixture of: thiobis(4,1-phenylene)-S,S,S',S'-tetraphenyldisulfonium bishexafluorophosphate; diphenyl(4-phenylthiophenyl)sulfonium hexafluorophosphate

EC Number:

404-986-7

EC Name:

A mixture of: thiobis(4,1-phenylene)-S,S,S',S'-tetraphenyldisulfonium bishexafluorophosphate; diphenyl(4-phenylthiophenyl)sulfonium hexafluorophosphate

Cas Number:

74227-35-3

IUPAC Name:

(4-{[4-(diphenylsulfaniumyl)phenyl]sulfanyl}phenyl)diphenylsulfanium; diphenyl[4-(phenylsulfanyl)phenyl]sulfanium; tris(hexafluoro-λ⁵-phosphanuide)

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

White powder

Results and discussion

Boiling point

Decomposition:

yes

Decomp. temp.:

>= 140 °C

Remarks on result:

other: Test conditions:Air atmosphere

Any other information on results incl. tables

The thermal analysis temperature has been reported as the definitive result as it represents the worst case scenario with respect to thermal stability. Also, the procedure utilized a constant heating rate. Two extra thermal analysis determinations were performed under nitrogen atmosphere, after determinations 2 and 3. The light brown fused granular solid residue obtained suggests that the test item decomposition is not of an oxidative nature.

The thermograms and thermographic data corresponding to the three determinations are shown in the Figure 3.1-3.3 (for thermogram) and Table 3.2-3.4 (for thermographic data ).The test item was assessed initially as a white powder. The appearance of the residues after thermal analysis, recorded on each thermogram, suggested melting and decomposition.

A modified Siwoloboff method was performed for confirmation. Observation times, temperatures and test item appearances are presented in Table 3.5. The test item was observed to decompose while partially melting from approximately 200 ℃ (473 K).

Performing a determination under reduced pressure was considered as not applicable due to the nature of the test item. Experience has shown that the procedure performed under reduced pressure is not suitable for solid test items. In addition, the test item is a mixture of components which only partially melted. Mixtures are also known to give erroneous results under reduced pressure.

Attached document:

Figure 3.1 Determination 1 –Thermogram

Table 3.2 Determination 1 -Thermographic Data

Figure 3.2 Determination 2 –Thermogram

Table 3.3 Determination 2 -Thermographic Data

Figure 3.3 Determination 3 –Thermogram

Table 3.4 Determination 3 -Thermographic Data

Table 3.5 test item appearances vs time and temperature

Applicant's summary and conclusion

Conclusions:

No determination of the boiling temperature was possible, as the test item decomposed while partially melting from approximately 140 ℃ (413 K).