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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study without detailed documentation.
Qualifier:
equivalent or similar to guideline
Guideline:
other: ASTM E537-07 (The Termal Stability Of Chemicals By Differential Scanning Calorimetry)
Principles of method if other than guideline:
The determination of the melting temperature (temperature range) was determined by Differential Scanning Calorimetry (DSC) and Thermogravimetric (TG)
GLP compliance:
no
Type of method:
thermal analysis
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material:
2012-000203
- Expiration date of the lot/batch:
07/02/2013, W0167
- Purity test date:
> 99.9%, 23/01/2011

INFORMATION ON NANOMATERIALS
- Chemical Composition:
Tin Dioxide
- Density:
6.936 g/cm³
- Particle size & distribution:
10-100 nm; 78
- Specific surface area:
7.4293 ± 0.0132 m²/g
Decomposition:
yes
Decomp. temp.:
1 613 °C
Sublimation:
no
Remarks on result:
other: Test n°1
Decomposition:
yes
Decomp. temp.:
900 °C
Sublimation:
no
Remarks on result:
other: Test n°2
Decomposition:
yes
Decomp. temp.:
1 500 °C
Sublimation:
no
Remarks on result:
other: Test n°4
Decomposition:
yes
Sublimation:
no
Remarks on result:
other: Test n° 4 : the decomposition temperature is not reported.

The test was performed using the NETZSCH STA F1 Jupiter (NETZSCH-Geratebau GmbH, Germany) apparatus.

The test was performed using different sensors:

 Test N°  Maximum Temperature [°C]  Sensor  Crucible material  Purging gas
 1  1650  TG-DSC  platinum  air
 2  2400  TG-DTA  tungsten  helium
 3  1650  DSC  platinum  argon
 4  1650  DSC  tungsten  argon

 
Conclusions:
The melting point of the test substance cannot be determined since the substance decomposes.

Description of key information

The melting point of the test substance cannot be determined since the substance decomposes.

Key value for chemical safety assessment

Additional information

The test report has been performed on Tin Dioxide NP.

Measured melting point reported for Tin Dioxide, unspecified form, in the "WHO 2005 TIN AND INORGANIC TIN COMPOUNDS" summary is: 1630°C.