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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental Starting Date: 21 April 2015 Experimental Completion Date: 08 June 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
thermal analysis
Key result
Melting / freezing pt.:
< 253 K
Decomposition:
no
Sublimation:
no

Results

Cooling data for Determinations 1 and 2 are shown in the following tables:

 

Table 3.1–Determination 1

 

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

0

20.5

600

-1.5

1200

-15.0

30

19.5

630

-2.0

1230

-15.5

60

18.0

660

-3.0

1260

-16.0

90

17.0

690

-4.0

1290

-16.0

120

16.0

720

-5.0

1320

-16.5

150

15.0

750

-5.5

1350

-17.0

180

14.0

780

-6.5

1380

-17.5

210

13.0

810

-7.5

1410

-18.0

240

11.5

840

-8.5

1440

-18.0

270

10.0

870

-9.0

1470

-18.5

300

9.0

900

-9.5

1500

-19.0

330

8.0

930

-10.0

1530

-19.0

360

6.5

960

-11.0

1560

-19.5

390

5.5

990

-11.5

1590

-20.0

420

4.5

1020

-12.0

1620

-20.0

450

3.5

1050

-12.5

1650

-20.5

480

2.5

1080

-13.0

1680

-20.5

510

1.5

1110

-13.5

1710

-21.0

540

0.5

1140

-14.0

 

 

570

-0.5

1170

-14.5

 

 

 

Observations: No change in test item appearance.

Result:            Freezing temperature: <-20 °C (<253 K).

 

Table 3.2–Determination 2

 

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

0

19.5

180

11.0

360

3.0

30

18.5

210

9.5

390

2.0

60

17.0

240

8.0

420

1.0

90

15.5

270

7.0

450

0.0

120

14.0

300

5.5

480

-1.0

150

12.5

330

4.5

510

-1.5

Table 3.2 continuedDetermination 2

 

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

540

-2.5

900

-11.5

1260

-18.0

570

-3.5

930

-12.0

1290

-18.5

600

-4.5

960

-13.0

1320

-18.5

630

-5.5

990

-13.5

1350

-19.0

660

-6.0

1020

-14.5

1380

-19.5

690

-7.0

1050

-15.0

1410

-19.5

720

-7.5

1080

-15.5

1440

-20.0

750

-8.5

1110

-16.0

1470

-20.5

780

-9.0

1140

-16.5

1500

-20.5

810

-10.0

1170

-16.5

1530

-21.0

840

-10.5

1200

-17.0

 

 

870

-11.0

1230

-17.5

 

 

 

Observations: No change in test item appearance.

Result:            Freezing temperature: <-20 °C (<253 K).

Conclusions:
The freezing temperature of the test item has been determined to be less than -20 °C (<253 K).
Executive summary:

The determination was carried out using a procedure designed to be compatible with Method A1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Conclusion

The freezing temperature of the test item has been determined to be less than -20 °C (<253 K).

 

Description of key information

The freezing temperature of the substance has been determined to be < -20°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-20 °C

Additional information