Registration Dossier
Registration Dossier
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EC number: 952-967-1 | CAS number: -
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:
- 2010-04-14 to 2010-09-14
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- GLP guideline study reliable without restrictions
- Justification for type of information:
- Disodium titanate substance (EC 234-802-9) has the molecular formula Na2TiO3 and its composition is expressed as (Na2O)x(TiO2), where x is ranging from 0.1 to 6 according to the SIP. This substance, Reaction mass of Disodium Hexatitanate and Sodium Metatitanate, has a value of x = 0.21, calculated from XRF results, has been identified as a mixture of two specific types of disodium titanate and is therefore within the scope of the disodium titanate SIP. It is assessed therefore that disodium titanate is an acceptable read-across substance for Reaction mass of Disodium Hexatitanate and Sodium Metatitanate
- 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)
- Remarks:
- signed, 2009-10-29
- Type of method:
- thermal analysis
- Remarks:
- Differential Scanning Calorimetry
- Key result
- Melting / freezing pt.:
- > 600 °C
- Atm. press.:
- 1 024 hPa
- Conclusions:
- The test item showed no melting in the temperature range of 25 – 600 °C.
Reference
Individual Results
Thermal Stability (DSC)
A DSC-measurement in closed glass crucible showed a small exothermal effect in a temperature range of 370 – 410 °C with energy of 15 J/g. This effect is related to the content of sodium hydroxide (referring to the MSDS) in the test item, which reacts with glass at higher temperatures.
Melting Point / Melting Range (DSC)
A measurement in stainless steel crucible with a hole showed a broad endothermic effect from the start of the measurement to app. 330 °C. No further effects have been observed up to the maximum temperature of 600 °C.
As the DSC run in the closed glass crucible showed no endothermic effect and the test item was unchanged after the measurement, it is concluded that no melting occurs. Therefore a second run was omitted.
Boiling Point / Boiling Range (DSC)
As no melting was observed, no boiling point could be determined.
Description of key information
The test item showed no melting in the temperature range of 25 – 600 °C.
Key value for chemical safety assessment
Additional information
The test item showed no melting in the temperature range of 25 – 600 °C.
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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