Registration Dossier
Registration Dossier
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EC number: 212-774-9 | CAS number: 868-19-9
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- November 5, 2014 - May 21, 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP-compliant study in accordance with EC A.1, OECD 102 and EPA OPPTS 830.7200.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- (2008)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- (1995)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- (1998)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Remarks:
- (differential scanning calorimetry)
Test material
- Reference substance name:
- Strontium tartrate
- EC Number:
- 212-774-9
- EC Name:
- Strontium tartrate
- Cas Number:
- 868-19-9
- Molecular formula:
- C4H4O6Sr
- IUPAC Name:
- strontium(2+) 2,3-dihydroxybutanedioate
- Details on test material:
- - Name of test material (as cited in study report): Strontium Tartrate (anhydrous)
- Appearance: Off-white powder
Constituent 1
Results and discussion
Melting / freezing point
- Decomposition:
- yes
- Decomp. temp.:
- > 250 °C
- Remarks on result:
- other: No melting before decomposition started. Decomp. temp. in K: > 523
Any other information on results incl. tables
PRELIMINARY TEST WITH TGA
From 250°C upwards the weight of the sample decreased significantly. At 428°C the sample weight had decreased by 25%. After the experiment, a brown/black residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test substance.
DSC EXPERIMENT
No effects were obtained which were due to melting of the test substance. The observed endothermic and exothermic peaks (from 250°C onwards) were due to reaction and/or decomposition of the test substance based on the shape of the heat flow curve. After the experiment, a brown residue remained in the sample container.
Applicant's summary and conclusion
- Conclusions:
- In a GLP-compliant study in accordance with EC A.1, OECD 102 and EPA OPPTS 830.7200 using differential scanning calorimetry, melting was not observed before decomposition of the substance started at 250°C. It was therefore concluded that the substance has no melting temperature.
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