Registration Dossier
Registration Dossier
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EC number: 206-167-8 | CAS number: 305-72-6
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 March 2017 - 22 May 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- 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)
- Version / remarks:
- from 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- Disodium 2-oxoglutarate
- EC Number:
- 206-167-8
- EC Name:
- Disodium 2-oxoglutarate
- Cas Number:
- 305-72-6
- Molecular formula:
- C5H6O5.2Na
- IUPAC Name:
- disodium 2-oxopentanedioate
- Reference substance name:
- Water
- EC Number:
- 231-791-2
- EC Name:
- Water
- Cas Number:
- 7732-18-5
- Molecular formula:
- H2O
- IUPAC Name:
- Oxidane
- Test material form:
- solid: crystalline
- Remarks:
- Crystalline powder
- Details on test material:
- Batch No: 14152300
Storage: 15 – 25 °C
Constituent 1
impurity 1
Results and discussion
Melting / freezing point
- Key result
- Atm. press.:
- >= 999 - <= 1 019.4 hPa
- Decomposition:
- yes
- Remarks:
- The test item showed a decomposition under evaluation of gas starting at approx. 200°C
- Decomp. temp.:
- ca. 200 °C
- Remarks on result:
- other:
- Remarks:
- During the heating phase an endothermic effect was observed in the temperature range of 210 – 260 °C, which cannot be assigned to the melting of the test item.The test item showed a decomposition under evaluation of gas starting at approx. 200°C.
Any other information on results incl. tables
During the heating phase an endothermic effect was observed in the temperature range of 210 – 260 °C, which cannot be assigned to the melting of the test item.The test item showed a decomposition under evaluation of gas starting at approx. 200°C.
No. |
Sample weight / mg |
Onset of Effect / °C |
Range of effect / °C |
Weight loss / mg |
Atmospheric pressure / hPa |
PN13015 |
14.20 |
243.04 |
210 -260(endo) |
8.28 |
1019.4 |
PN13047 |
7.77 |
243.57 |
210 -260(endo) |
6.66 |
999.0 |
Applicant's summary and conclusion
- Conclusions:
- The test item Alpha-Ketoglutarate disodium salt (CAS no. 305-72-6) has no melting point at atmospheric pressure (999 - 1019 hPa) up to the decomposition temperature of approx. 200 °C, as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
- Executive summary:
The test item Alpha-Ketoglutarate disodium salt (CAS no. 305-72-6) has no melting point at atmospheric pressure (999 - 1019 hPa) up to the decomposition temperature of approx. 200 °C, as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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