Phosphorodithioic acid, mixed O,O-bis(2-ethylhexyl and iso-Bu and pentyl) esters, zinc salts

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Between 08 October 2012 and 03 December 2012.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

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, done to a valid guideline and the study was conducted under GLP conditions.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2013

Report date:

2013

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Deviations:

no

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

Phosphorodithioic acid, mixed O,O-bis(2-ethylhexyl and iso-Bu and pentyl) esters, zinc salts

EC Number:

273-527-9

EC Name:

Phosphorodithioic acid, mixed O,O-bis(2-ethylhexyl and iso-Bu and pentyl) esters, zinc salts

Cas Number:

68988-45-4

Molecular formula:

Not applicable

IUPAC Name:

Phosphorodithioic acid, mixed O,O-bis(2-ethylhexyl and iso-Bu and pentyl) esters, zinc salts

Details on test material:

Identification: A-197
Description: Pale brown liquid
Batch: B12-12212
Purity: 77 % in mineral oil
Expiry / Retest Date: 20 September 2013
Storage Conditions: Approximately 4 °C in the dark

Results and discussion

Boiling point

Atm. press.:

101.9 kPa

Decomposition:

yes

Decomp. temp.:

ca. 200 °C

Any other information on results incl. tables

Thermographic data for Determinations 1 and 2 are shown in the tables below.

Table 3.3       Thermographic Data – Determination 1

 

Thermal Event	Interpretation	Temperature
		°C	K
Rise in the baseline	Onset of decomposition	~200	~473

 

Atmospheric pressure: 101.9 kPa

Table 3.4       Thermographic Data – Determination 1

Thermal Event	Interpretation	Temperature
		°C	K
Rise in the baseline	Onset of decomposition	~200	~473

 

Atmospheric pressure: 101.9 kPa

 

Overall result: Decomposed from approximately 200 °C (473 K).

 

As the test item decomposed, no value for the boiling temperature could be determined experimentally.

Please see Attachment 1 for Thermogram data.

Applicant's summary and conclusion

Conclusions:

The test item has been determined to decompose from approximately 200 °C (473 K) at 101.9 kPa. As the test item decomposed, no value for the boiling temperature could be determined experimentally.

Executive summary:

The determination was carried out by differential scanning calorimetry, using a procedure designed to be compatible with Method A2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Discussion

As a result of the low rate of enthalpy change during decomposition, the onset temperature can only be approximated.

Conclusion

The test item has been determined to decompose from approximately 200 °C (473 K) at 101.9 kPa. As the test item decomposed, no value for the boiling temperature could be determined experimentally.