Registration Dossier
Registration Dossier
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EC number: 946-103-2 | CAS number: -
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 01.01.2015 to 31.08.2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: In compliance with ISO 17025
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Principles of method if other than guideline:
- The melting point has been analysed according to OECD Guideline 102. The used method was the Differential Scanning Calorimetry (DSC), where the sample was heated from 20 to 600 °C. In addition, the sample was heated in an oven up to 1400 K.
- GLP compliance:
- no
- Remarks:
- accreditated method
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- thermal analysis
Test material
- Reference substance name:
- Calcium hydrosilicate, reaction product of natural quartz sand and technical lime by a hydrothermal and tribochemical process
- EC Number:
- 946-103-2
- IUPAC Name:
- Calcium hydrosilicate, reaction product of natural quartz sand and technical lime by a hydrothermal and tribochemical process
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): Celitement
- Chemical name: Calcium hydrosilicate
- Physical state: White powder
- pH-value: 10.5
- Expiration date of the lot/batch: 12/2015
- Stability under test conditions: Hydration reaction with water
- Storage condition of test material: Room temperature protected from light, in original container in evacuated desiccator
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- > 1 600 °C
- Atm. press.:
- ca. 1.013 Bar
- Decomposition:
- ambiguous
- Remarks:
- dehydration of some constituents, no real decomposition
- Decomp. temp.:
- > 50 - < 600 °C
- Sublimation:
- no
Applicant's summary and conclusion
- Conclusions:
- Celitement showed dehydration between 50 and 600 °C. At the beginning calcium hydrosilicate (CHS) and calcium silcate hydrate phases (CSH) and at the end calcium hydroxide lost chemical bounded water. The dehydration was not combined with a melting of the powdery substance.
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