Registration Dossier
Registration Dossier
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EC number: 209-683-1 | CAS number: 590-46-5
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06/12/2017 - 11/12/2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point/Boiling Range)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch 20161110
- Decomposition:
- yes
- Decomp. temp.:
- 239 °C
- Conclusions:
- The test item had no boiling point under atmospheric conditions. Decomposition started at 239°C.
- Executive summary:
The test item 'betaine hydrochlorire' had no boiling point up to 500°C under atmospheric conditions as determined by DSC. Decomposition started at 239°C as determined by the capillary method.
Reference
One DSC measurement in aluminium crucibles with a hole showed a multistep endothermal effect in the temperature range of 210 - 300°C. No further endothermic or exothermic effects were observed up to the final temperature (500°C). The mass loss after the DSC meausurements amounted to 98%. In order to clarify the endothermal effect an additional capillary measurement was performed.
A measurement with the capillary method was performed to clarify the results of the DSC measurements. Since this measurement was performed only as a verifying screening a high heating rate of 10 K/min was chosen and therefore the absolute temperaute values derived with the capillary method are not as accurate as the DSC results. The filling height of the test item was approximately 5 mm.
The capillary method showed that the test item decomposed before boiling could occur. The test item had no boiling point under atmospheric conditions. Decomposition started at approximately 239°C.
Description of key information
The test item had no boiling point up to 500°C under atmospheric conditions as determined by DSC. Decomposition started at 239°C as determined by the capillary method.
Key value for chemical safety assessment
Additional information
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