Registration Dossier
Registration Dossier
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EC number: 286-924-7 | CAS number: 85392-65-0
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:
- 4 October 2010 to 21 December 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Decomposition:
- yes
- Decomp. temp.:
- 340 °C
- Remarks on result:
- other: No signs of melting below 450°C, however test item was observed to decompose from approximately 340°C
- Conclusions:
- Tetraammonium decachloro-mu-oxodiruthenate (4-) decomposed from approximately 340°C, with no definitive signs of melting below 450°C.
- Executive summary:
Tremain and Atwal (2011) is a GLP compliant study following OECD guideline 102 and EU method A1 and is considered suitable for use as the key study for this endpoint. Tetraammonium decachloro-mu-oxodiruthenate (4-) decomposed from approximately 340°C, with no definitive signs of melting below 450°C.
Reference
No signs of melting below 450°C, however the test item was observed to decompose from approximately 340°C.
Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicates that the observed decomposition in both determinations is probably thermal and not oxidative.
There were no signs of melting in determinations 1 and 2 however the test item had changed colour from a black powder to a grey powder. In determination 3 the test item was heated to 340 °C after which the test item appearance was unchanged
Description of key information
Tetraammonium decachloro-mu-oxodiruthenate (4-) decomposed from approximately 340°C, with no definitive signs of melting below 450°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 450 °C
Additional information
Tremain and Atwal (2011) is a GLP compliant study following OECD guideline 102 and EU method A1 and is considered suitable for use as the key study for this endpoint. Tetraammonium decachloro-mu-oxodiruthenate (4-) decomposed from approximately 340°C, with no definitive signs of melting below 450°C.
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