Registration Dossier
Registration Dossier
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EC number: 212-390-1 | CAS number: 813-93-4
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:
- 7 October 2011 to 9 December 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted in accordance with OECD and EU guidelines.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 113 (1981) Screening test for thermal stability and stability in air
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- > 500 °C
- Decomposition:
- yes
- Remarks on result:
- other: It can be assumed that the test item underwent an endothermic decomposition (discolouration to black).
- Conclusions:
- The test item, bismuth citrate, has a melting point > 500 °C under atmospheric conditions.
- Executive summary:
The purpose of this study was the determination of the thermal stability and melting point of the test item according to the European Commission Regulation (EC) No. 440/2008, Part A: Methods for the determination of physico-chemical properties. A.1. Melting point / melting range and OECD test guidelines, OECD 102 (1995) Melting point/melting range, OECD 113 (1981) Screening test for thermal stability and stability in air.
One measurement in an open glass crucible showed one endothermic effect in the temperature range 270 °C to 360 °C. No further endothermic or exothermic were observed up to the final temperature of the measurement (500 °C).
An optical inspection of the test item after the measurement showed a discolouration to black. The test item was still a powder.
Due to the optical inspection it can be concluded, that the test item has no melting point up to 500 °C. It can be assumed that the test item underwent an endothermic decomposition (discolouration to black).
Reference
Thermal Stability (DSC)
The DSC-measurements in closed glass crucibles with the test item showed a multistep endothermic effect in the temperature range 265 °C to 340 °C. No further exothermic or endothermic effects were observed up to the final temperature (400 °C and 500 °C, respectively).
An optical inspection showed a discolouration to black after the measurement.
Melting Point / Melting Range (DSC)
One measurement in an open glass crucible showed one endothermic effect in the temperature range 270 °C to 360 °C. No further endothermic or exothermic were observed up to the final temperature of the measurement (500 °C).
An optical inspection of the test item after the measurement showed a discolouration to black. The test item was still a powder.
Due to the optical inspection it can be concluded, that the test item has no melting point up to 500 °C. It can be assumed that the test item underwent an endothermic decomposition (discolouration to black).
Description of key information
Bismuth citrate has a melting point of > 500 °C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 500 °C
Additional information
A study was conducted to determine the thermal stability and melting point of the test item according to the European Commission Regulation (EC) No. 440/2008, Part A: Methods for the determination of physico-chemical properties. A.1. Melting point / melting range and OECD test guidelines, OECD 102 (1995) Melting point/melting range, OECD 113 (1981) Screening test for thermal stability and stability in air.
Due to the optical inspection it can be concluded, that the test item has no melting point up to 500 °C. It can be assumed that the test item underwent an endothermic decomposition (discolouration to black).
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