Registration Dossier

Diss Factsheets

Physical & Chemical properties

Boiling point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
03 May 2018 - 05 June 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Remarks:
Initially assessed by the Siwoloboff method using a calibrated digital melting point apparatus
Specific details on test material used for the study:
- Batch: D05/38
- Expiration date: 30 August 2021
- Purity: 97.36%
- Storage condition of test material: Room temperature in the dark
Decomposition:
yes
Decomp. temp.:
>= 364 °C

Results

The initial sample appearance was a white powder. As the boiling tube was heated at 10°C/minute, the sample was observed to boil and darken to a light brown colour at a temperature of approximately 364°C, indicating decomposition at this temperature. When heating was continued beyond this temperature to 400°C, the sample continued to darken in colour. At the end of the visual assessment, the material was a dark brown liquid.

The resulting profile by DSC shows the melting endotherm at approximately 250°C and the onset of decomposition at approximately 350°C. During the DSC assessment, the test item was initially described as a white powder and following the measurement the material had turned into a black residue.

 

There is an additional smaller endotherm at approximately 190°C, the cause of which is not known, but which maybe a loss of a volatile component.

Conclusion

The boiling temperature of the test item, Potassium 12-hydroxystearate, was not determinable as the test item decomposed on boiling at temperatures above approximately 364°C.

Conclusions:
The boiling point of potassium 12-hydroxystearate could not be determined as the substance decomposed upon boiling at temperatures above approximately 364°C.
Executive summary:

The boiling point of potassium 12-hydroxystearate was investigated in a GLP-compliant study following OECD guideline 103. The boiling point of potassium 12-hydroxystearate could not be determined as the substance decomposed on boiling at temperatures above approximately 364°C.

Description of key information

The boiling point of potassium 12-hydroxystearate could not be determined as the substance decomposed on boiling at temperatures above approximately 364°C.

Key value for chemical safety assessment

Additional information

The boiling point of potassium 12-hydroxystearate was investigated in a GLP-compliant study following OECD guideline 103 (Agrochemex 2018).