Registration Dossier
Registration Dossier
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EC number: 242-768-1 | CAS number: 19035-79-1
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2011-10-24 to 2011-10-27
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- adopted 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- dated March 1998
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- dated 31 May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- 153.2 - 156.6 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting range of potassium hexadecyl hydrogen phosphate was determined to be 153.2 °C to 156.6 °C (426 K to 430 K) at 1013.25 hPa.
- Executive summary:
A study was conducted according to Regulation (EC) No 440/2008 method A.1, OECD TG No. 102 and OPPTS 830.7200. Using the capillary method the determination of the melting point was performed by visual judgement. In the preliminary test potassium hexadecyl hydrogen phosphate started melting at 161 °C. The main test was done in triplicate. The test item showed in each replicate five stages of melting. The melting started at 153.2 °C. At 156.6 °C the last stage of melting was reached. Thus, a melting range of 153.2 °C to 156.6 °C at 1013.25 hPa was determined.
Reference
In the preliminary test the test item started melting at 161 °C. The test item showed five stages of melting. The melting started at 153.2 °C (mean of 3 replicates). At 156.6 °C (mean of 3 replicates) the last stage of melting was reached.
Description of key information
The melting range of potassium hexadecyl hydrogene phosphate was determined to be 153.2 °C to 156.6 °C at 1013.25 hPa.
Key value for chemical safety assessment
Additional information
A study was conducted according to Regulation (EC) No 440/2008 method A.1, OECD TG No. 102 and OPPTS 830.7200. Using the capillary method the determination of the melting point was performed by visual judgement. In the preliminary test potassium hexadecyl hydrogen phosphate started melting at 161 °C. The main test was done in triplicate. The test item showed in each replicate five stages of melting. The melting started at 153.2 °C. At 156.6 °C the last stage of melting was reached. Thus, a melting range of 153.2 °C to 156.6 °C at 1013.25 hPa was determined.
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