Registration Dossier
Registration Dossier
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Reaction products of diazotised 2-amino-5-{[2-(sulfooxy)ethyl]sulfonyl}benzenesulfonic acid coupled with 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid under acidic conditions, further coupled with diazotised reaction products of 2,4,6-trifluoro-1,3,5-triazine with 2-[(2-anilinoethyl)sulfonyl]ethyl hydrogen sulfate and 2,4-diaminobenzenesulfonic acid (1:1:1) under alkaline conditions, potassium sodium salts
EC number: 948-562-4 | 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:
- September 04, 2018 - September 07, 2018
- 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
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 195 °C
- Conclusions:
- No melting point up to the decomposition temperature observed.
- Executive summary:
The test item had no melting point at atmospheric conditions. Decomposition started at approx. 195 °C.
Reference
Melting point / melting range: Differential scanning calorimetry
The DSC measurement in an aluminium crucible with a hole showed an endothermal effect in the temperature range of 110 – 195 °C, directly followed by an exothermal effect in the temperature range of 195 – 340 °C. A 2nd measurement was stopped at 200 °C. This measurement showed an endothermal effect in the temperature range of 110 – 200 °C. Visual inspection after the measurement showed that the test item was unchanged.
The result of the DSC measurement is summarized in Table1.
Table1: DSC measurements
Ident No. |
Test item / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range / °C |
Crucible |
Observations after the measurement |
38173 |
11.10 |
25 |
500 |
110 – 195 195 – 340
|
Aluminium with a hole |
Test item was a black solid after the measurement; mass loss: 32 % |
38180 |
13.90 |
25 |
200 |
110 – 200 |
Aluminium with a hole |
Test item was unchanged after the measurement; mass loss: 5 % |
Under consideration of the result from the DSC measurement it was concluded that the test item had no melting point at atmospheric conditions. Decomposition started at approx. 195 °C.
Description of key information
The test item had no melting point at atmospheric conditions. Decomposition started at approx. 195 °C.
Key value for chemical safety assessment
Additional information
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