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EC number: 859-869-7 | CAS number: 201419-80-9
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:
- April 2021
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- adopted July 27, 1995
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- 5.1.1 Name and Data of Test Item
Test item: 2,4,8,10-Tetraoxa-3,9-dithiaspiro[5.5]undecane,
3,3,9,9-tetraoxide
CAS No.: 201419-80-9
Lot number: AZ08AVL1
Purity: > 99.9 %
Appearance: crystalline solid, white
Expiration date: 21 September 2021
Storage conditions: room temperature, protected from humidity, well-closed container - Key result
- Melting / freezing pt.:
- >= 277.5 - <= 283.5 °C
- Atm. press.:
- ca. 101 325 Pa
- Decomposition:
- yes
- Remarks:
- melting point was determined followed by decomposition in the range of 300.1 – 310.4 °C with 6.73 J/g decomposition energy..
- Decomp. temp.:
- >= 300.1 - <= 310.4 °C
- Conclusions:
- For the determination of the melting point differential scanning calorimetry method was used. Applying a linear heating rate, the melting point of 2,4,8,10-Tetraoxa-3,9-dithiaspiro[5.5]undecane, 3,3,9,9-tetraoxide was determined to be in the range of 277.5 –283.5 °C (550.7 – 556.7 K) at normal atmospheric pressure followed by decomposition in the range of 300.1 – 310.4 °C (573.3 – 583.6 K) with 6.73 J/g decomposition energy.
Based on the thermograms and the appearance of test item after the tests it is concluded that the test item decomposes after melting. - Executive summary:
For the determination of the melting point differential scanning calorimetry method was used. Applying a linear heating rate, the melting point of 2,4,8,10-Tetraoxa-3,9-dithiaspiro[5.5]undecane, 3,3,9,9-tetraoxide was determined to be in the range of 277.5 –283.5 °C (550.7 – 556.7 K) at normal atmospheric pressure followed by decomposition in the range of 300.1 – 310.4 °C (573.3 – 583.6 K) with 6.73 J/g decomposition energy.
Based on the thermograms and the appearance of test item after the tests it is concluded that the test item decomposes after melting.
Reference
Description of key information
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 277.5 °C
Additional information
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