Reaction products of bis(4-methylpentan-2-yl)dithiophosphoric acid with phosphorus oxide, propylene oxide and amines, C12-14-alkyl (branched)

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2 February 2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study was performed according to an industry accepted guideline

Qualifier:

according to guideline

Guideline:

other: ASTM E2550-07 Standard Test Method for Thermal Stability by Thermogravimetry

Deviations:

no

GLP compliance:

no

Remarks:

The company is ISO 9001/2000 certified which requires regularaudits to demonstrate ability to provide products meeting customer & regulatory requirements including documentation of analytical procedures, maintenance & calibration of equipment.

Type of method:

other: Thermogravimetric analysis

Decomposition:

yes

Decomp. temp.:

209 °C

Remarks on result:

other: 58.8 % of test material

Decomposition:

yes

Decomp. temp.:

250 °C

Remarks on result:

other: 19.9 % of test material

Decomposition:

yes

Decomp. temp.:

529 °C

Remarks on result:

other: 11.9% of test material

TGA data show there were three main thermal events resulting in weight loss associated with sample decomposition. Derivative peaks at 209 ⁰C, 250 ⁰C and 529 ⁰C accounted for a weight loss of 91.5%. The overall onset of sample weight loss occurred at approx. 198 C.

A TGA thermograph is attached as Figure 1

Table 1: Results of TGA Analysis

Derivative Peak (^oC)	% Weight Loss
209	58.8
250	19.8
529	11.9
Residue at 700^oC	9.5

Conclusions:

Analysis by TGA indicates the test substance decomposes before boiling. The test material’s weight loss associated with decomposition occurred at temperatures of 209, 250 and 529 C. The onset of decomposition occurred at 198 C.

Executive summary:

A thermogravimetric analysis performed according to the ASTM E2550 -07 guideline indicates the test substance decomposes before boiling.

The test material was heated under nitrogen up to 700 ^oC. Examination of the TGA curve showed test material weight loss associated with decomposition. The onset of weight loss occurred at approx. 198 ^oC. There were three main thermal events at derivative peak values of 209, 250 and 529 ^oC corresponding to weight loss values of approximately 58.8, 19.8 and 11.9 %, respectively. A residue remained at 700 ^oC equivalent to 9.5 % of the test material.

Description of key information

Analysis by TGA indicates the test substance decomposes before boiling.  The test material’s weight loss associated with decomposition occurred at temperatures  of 209, 250 and  529 C. The onset of decomposition occurred at 198 C (ASTM E2550 -07).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

198 °C

Additional information

A thermogravimetric analysis performed according to the ASTM E2550 -07 guideline indicates the test substance decomposes before boiling. The test material was heated under nitrogen up to 700 °C. Examination of the TGA curve showed test material weight loss associated with decomposition.The onset of weight loss occurred at approx. 198 °C. There were three main thermal events at derivative peak values of 209, 250 and 529 °C corresponding to weight loss values of approximately 58.8, 19.8 and 11.9 %, respectively. A residue remained at 700oC equivalent to 9.5 % of the test material.