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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:
The study was conducted between 18 June 2015 and 02 September 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: Freezing temperature determination
Melting / freezing pt.:
< -20 °C
Remarks on result:
other: The test item did not freeze.

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

 

Determination A 

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

0

20.0

930

1.0

1860

-7.0

30

18.0

960

1.0

1890

-8.0

60

17.0

990

1.0

1920

-8.5

90

16.5

1020

1.0

1950

-9.0

120

16.0

1050

0.5

1980

-10.0

150

15.5

1080

0.0

2010

-10.0

180

15.0

1110

0.0

2040

-10.5

210

14.0

1140

0.0

2070

-11.0

240

13.5

1170

-0.5

2100

-12.0

270

13.0

1200

-1.0

2130

-13.0

300

12.5

1230

-1.0

2160

-14.5

330

13.0

1260

-1.5

2190

-15.5

360

12.5

1290

-1.5

2220

-16.5

390

9.5

1320

-1.0

2250

-18.0

420

9.0

1350

-1.0

2280

-18.0

450

8.0

1380

-1.0

2310

-18.5

480

7.0

1410

-1.5

2340

-19.0

510

7.0

1440

-1.5

2370

-19.0

540

6.5

1470

-2.0

2400

-19.5

570

6.0

1500

-2.5

2430

-19.5

600

5.5

1530

-2.5

2460

-20.0

630

5.0

1560

-2.5

2490

-20.0

660

4.5

1590

-2.5

2520

-20.5

690

4.0

1620

-3.0

2550

-20.5

720

3.0

1650

-4.0

2580

-20.5

750

3.0

1680

-4.5

2610

-20.5

780

2.5

1710

-4.5

2640

-21.0

810

2.0

1740

-5.0

2670

-21.0

840

1.5

1770

-5.5

2700

-21.0

870

0.5

1800

-6.0

2730

-21.5

900

1.0

1830

-6.5

2760

-21.5

Observations: The test item did not freeze.

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

Determination B 

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

0

22.0

690

1.0

1380

-13.0

30

21.5

720

0.5

1410

-14.0

60

20.5

750

-0.5

1440

-15.0

90

19.0

780

-1.0

1470

-16.0

120

17.0

810

-1.5

1500

-16.0

150

15.5

840

-2.5

1530

-17.0

180

14.5

870

-3.0

1560

-17.5

210

12.5

900

-3.5

1590

-17.5

240

11.0

930

-4.0

1620

-18.0

270

10.0

960

-4.5

1650

-18.0

300

8.5

990

-5.0

1680

-18.5

330

7.0

1020

-5.0

1710

-18.5

360

7.0

1050

-6.0

1740

-19.0

390

7.5

1080

-6.5

1770

-19.5

420

7.0

1110

-7.0

1800

-19.5

450

6.5

1140

-7.5

1830

-20.0

480

6.0

1170

-7.5

1860

-20.5

510

5.0

1200

-8.0

1890

-20.5

540

4.5

1230

-8.5

1920

-21.0

570

4.0

1260

-9.0

1950

-21.0

600

3.0

1290

-9.0

1980

-21.5

630

2.5

1320

-10.0

2010

-21.5

660

1.5

1350

-11.0

-

-

Observations: The test item did not freeze.

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:

Melting/Freezing Temperature. Less than -20 °C (253 K) 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.

Description of key information

Melting/Freezing Temperature. Less than -20 °C (253 K)

Key value for chemical safety assessment

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

Additional information

The melting point was determined 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.