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EC number: 268-040-3 | CAS number: 67990-17-4
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:
- 14 May 2018 - 23 May 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)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- March 1998
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Toxi-Coop ZRT. Arácsi út 97. 8230 Balatonfüred Hungary
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- -29.3 °C
- Atm. press.:
- 1 013.25 hPa
- Conclusions:
- The freezing point of Sodium (2-butoxyethoxy) acetate was determined to be -29.3 °C (243.9 K).
- Executive summary:
For the determination of the freezing point of test item differential scanning calorimetry method was used according OECD TG 102. Applying 0.5 °C/min heating and cooling rate the freezing point of Sodium (2-butoxyethoxy) acetate was determined to be -29.3 °C (243.9 K).
Reference
Appearance of the samples
Before the test the appearance of Sodium (2-butoxyethoxy) acetate was light yellow viscous liquid. After the experiments, the test item did not change in the crucible.
Table 1. Observations during the freezing point test
Temperature (°C) |
Storage period (hours) |
State of the samples |
|
Replicate 1 |
Replicate 2 |
||
-30 |
24 |
solid |
solid |
-30 |
48 |
solid |
solid |
Table 2. Values of the DSC run in the first experiment
Experiment Phase |
Sample weight [mg] |
Total loss of Mass of the Sample [%] |
Onset of effect [°C] |
Midpoint ISO [°C] |
Mean Midpoint ISO [°C] |
Cooling down |
9.54 |
0.1 |
-26.34 |
-28.98 |
-29.77 |
Table 3. Values of the DSC run in the second experiment
Experiment Phase |
Sample weight [mg] |
Total loss of Mass of the Sample [%] |
Onset of effect [°C] |
Midpoint ISO [°C] |
Mean Midpoint ISO [°C] |
Cooling down |
12.08 |
0.3 |
-26.41 |
-27.56 |
-28.77 |
Heating up |
-30.16 |
-29.97 |
Table 4. Summary of the DSC Test of Test Item
Experiment 1 |
Experiment 2 |
Mean |
Remark |
-29.77 |
-28.77 |
-29.27 °C |
Glass transition temperature |
Description of key information
The freezing point of Sodium (2-butoxyethoxy) acetate was determined to be -29.3 °C (243.9 K).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -29.3 °C
Additional information
For the determination of the freezing point of test item differential scanning calorimetry method was used according OECD TG 102. Applying 0.5 °C/min heating and cooling rate the freezing point of Sodium (2-butoxyethoxy) acetate was determined to be -29.3 °C (243.9 K).
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