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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 01 November 2017 and 26 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)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method to determine freezing temperature
Specific details on test material used for the study:
Identification: PG-RAW-0004
Appearance/physical state: clear, colorless liquid
Storage conditions: approximately 4 °C, in the dark
Key result
Melting / freezing pt.:
< -20 °C

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

Determination 1

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

0

21.0

840

-10.5

30

20.0

870

-11.5

60

19.0

900

-12.0

90

17.5

930

-13.0

120

16.0

960

-14.0

150

14.5

990

-15.0

180

13.5

1020

-15.0

210

12.5

1050

-15.5

240

11.0

1080

-15.5

270

10.0

1110

-16.0

300

8.5

1140

-16.0

330

7.0

1170

-16.5

360

6.0

1200

-16.5

390

4.5

1230

-17.0

420

3.5

1260

-17.0

450

2.5

1290

-17.5

480

1.5

1320

-17.5

510

0.0

1350

-18.0

540

-1.0

1380

-18.0

570

-1.5

1410

-18.5

600

-2.5

1440

-19.0

630

-3.5

1470

-19.5

660

-5.0

1500

-20.0

690

-6.0

1530

-20.0

720

-7.0

1560

-20.5

750

-8.0

1590

-20.5

780

-9.0

1620

-21.0

810

-9.5

 

 

Observations: The test item did not change in appearance during cooling.

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

 

Determination 2

Time (s)

Temperature (°C)

Time (s)

Temperature (°C)

0

21.0

780

-9.5

30

20.0

810

-10.0

60

19.0

840

-10.5

90

17.5

870

-11.0

120

15.5

900

-12.0

150

14.0

930

-13.0

180

12.0

960

-14.0

210

10.0

990

-15.0

240

9.0

1020

-16.0

270

7.0

1050

-16.5

300

5.0

1080

-17.0

330

4.0

1110

-17.5

360

3.0

1140

-18.0

390

2.0

1170

-18.0

420

0.5

1200

-18.5

450

-1.0

1230

-18.5

480

-2.0

1260

-19.0

510

-3.0

1290

-19.0

540

-3.5

1320

-19.5

570

-4.0

1350

-19.5

600

-4.5

1380

-20.0

630

-5.0

1410

-20.0

660

-6.0

1440

-20.5

690

-7.0

1470

-20.5

720

-8.0

1500

-21.0

750

-9.0

 

 

 

Observations: The test item did not change in appearance during cooling.

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

Conclusions:
The freezing point of PG-RAW-0004 was determined to be <-20°C in a reliable GLP study according to OECD TG 102 to determine freezing temperature.
Executive summary:

The freezing point of PG-RAW-0004 was determined to be <-20°C according to OECD TG 102 to determine freezing temperature.

Description of key information

The freezing point of PG-RAW-0004 was determined to be <-20°C according to OECD TG 102 to determine freezing temperature.

Key value for chemical safety assessment

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

Additional information