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EC number: 283-740-9 | CAS number: 84712-50-5
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:
- 2016-06-24 to 2016-11-09
- 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:
- Commission Regulation (EC) No 440/2008 of 30 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Date of inspection: 05/07/2016; Date of issue: 28/10/2016
- Type of method:
- method to determine freezing temperature
- Key result
- Melting / freezing pt.:
- < -20 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- A freezing temperature of <-20 ± 0.5°C (<253 ± 0.5 K) was determined using a relevant test method and in compliance with GLP. The result is considered to be reliable.
- Executive summary:
The freezing temperature of the test item has been determined to be less than -20 ± 0.5°C (<253 ± 0.5 K) using a method to determine the freezing temperature of a substance.
Reference
Cooling data for Determinations 1 and 2 are shown in the following tables:
Table 1: Determination 1
Time (s) |
Temperature (°C) |
Time (s) |
Temperature (°C) |
Time (s) |
Temperature (°C) |
0 |
19.5 |
420 |
-3.0 |
840 |
-15.0 |
30 |
18.0 |
450 |
-4.0 |
870 |
-16.0 |
60 |
16.0 |
480 |
-5.0 |
900 |
-16.5 |
90 |
14.0 |
510 |
-6.0 |
930 |
-17.0 |
120 |
12.0 |
540 |
-7.5 |
960 |
-17.5 |
150 |
10.5 |
570 |
-8.5 |
990 |
-18.0 |
180 |
8.5 |
600 |
-9.5 |
1020 |
-18.5 |
210 |
6.5 |
630 |
-10.0 |
1050 |
-19.0 |
240 |
5.0 |
660 |
-10.5 |
1080 |
-19.5 |
270 |
3.5 |
690 |
-11.5 |
1110 |
-19.5 |
300 |
2.0 |
720 |
-12.0 |
1140 |
-20.0 |
330 |
0.5 |
750 |
-13.0 |
1170 |
-20.5 |
360 |
-0.5 |
780 |
-14.0 |
1200 |
-20.5 |
390 |
-2.0 |
810 |
-14.5 |
1230 |
-21.0 |
Observations: The test item became increasingly viscous during cooling.
Result: Freezing temperature: <-20°C (<253 K).
Table 2: Determination 2
Time (s) |
Temperature (°C) |
Time (s) |
Temperature (°C) |
Time (s) |
Temperature (°C) |
0 |
19.5 |
420 |
-3.5 |
840 |
-14.5 |
30 |
18.0 |
450 |
-4.5 |
870 |
-15.0 |
60 |
16.0 |
480 |
-5.5 |
900 |
-16.0 |
90 |
14.0 |
510 |
-6.5 |
930 |
-16.5 |
120 |
12.5 |
540 |
-7.0 |
960 |
-17.0 |
150 |
10.5 |
570 |
-8.0 |
990 |
-17.5 |
180 |
9.0 |
600 |
-9.0 |
1020 |
-18.0 |
210 |
7.0 |
630 |
-10.0 |
1050 |
-18.0 |
240 |
5.0 |
660 |
-10.5 |
1080 |
-18.5 |
270 |
3.5 |
690 |
-11.0 |
1110 |
-19.0 |
300 |
2.0 |
720 |
-12.0 |
1140 |
-19.5 |
330 |
0.5 |
750 |
-12.5 |
1170 |
-20.0 |
360 |
-0.5 |
780 |
-13.5 |
1200 |
-20.5 |
390 |
-2.0 |
810 |
-14.0 |
1230 |
-21.0 |
Observations: The test item became increasingly viscous during cooling.
Result: Freezing temperature: <-20°C (<253 K).
Graphs of temperature (K) versus time (s) for Determinations 1 and 2 are in the attached figures.
Description of key information
Freezing temperature: <-20 ± 0.5°C (<253 ± 0.5 K) at 1013 hPa (OECD 102)
Key value for chemical safety assessment
Additional information
A measured freezing temperature of <-20 ± 0.5°C (<253 ± 0.5 K) at 1013 hPa was determined for the substance in a study conducted in accordance with OECD Test Guideline 102 and in compliance with GLP. The result is considered to be reliable.
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