Registration Dossier
Registration Dossier
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EC number: 226-540-9 | CAS number: 5421-46-5
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:
- 2007-08-28 to 2007-09-05
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- Cited as Directive 92/69/EEC, A.1
- Principles of method if other than guideline:
- Method 102 of the OECD guideline for testing of chemicals
- GLP compliance:
- yes
- Type of method:
- method to determine freezing temperature
- Remarks:
- BS4633
- Key result
- Melting / freezing pt.:
- < -20 °C
- Conclusions:
- The freezing temperature of the test material has been determined to be less than 253 +/- 0.5 K.
Reference
The test material became increasingly viscous during cooling. The freezing temperature is below 253 K.
Description of key information
Freezing point: < -20°C (EU method A1 determination of crystallizing point)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -20 °C
Additional information
The freezing temperature of a solution of 70% ammonium thioglycolate in water has been determined to be less than 253± 0.5 K by using EU method A1 corresponding to OECD TG 102.
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