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Physical & Chemical properties

Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012-08-16 to 2012-09-13
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
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:
method to determine freezing temperature
Melting / freezing pt.:
< -20 °C
Atm. press.:
1 013 hPa
Melting / freezing pt.:
< 253 K
Atm. press.:
1 013 hPa

Results

Table 1: Determination 1

Time (s)

Temperature (K)

Time (s)

Temperature (K)

0

293

540

268

30

291

570

268

60

290

600

267

90

288

630

266

120

287

660

266

150

285

690

266

180

283

720

266

210

281

750

265

240

280

780

265

270

278

810

265

300

277

840

265

330

275

870

263

360

274

900

263

390

273

930

262

420

271

960

262

450

271

990

261

480

269

1020

261

510

269

1050

260

1080

260

1320

255

1110

259

1350

254

1140

258

1380

254

1170

257

1410

253

1200

257

1440

253

1230

256

1470

252

1260

256

1500

252

1290

255

 

 

 

Observations: There were no changes in the physical state of the test item during cooling.

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

 

 

Results

Table 1: Determination 2

Time (s)

Temperature (K)

Time (s)

Temperature (K)

0

297

630

270

30

297

660

269

60

295

690

268

90

293

720

267

120

291

750

266

150

290

780

264

180

288

810

263

210

287

840

262

240

285

870

261

270

284

900

260

300

282

930

259

330

281

960

258

360

280

990

258

390

278

1020

256

420

277

1050

256

450

276

1080

255

480

274

1110

254

510

273

1140

254

540

272

1170

253

570

271

1200

253

600

271

1230

252

 

Observations: There were no changes in the physical state of the test item during cooling.

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

 

Table 3: Freezing points

 

Freezing point

 

 

°C

K

1stdefinitive test

<-20

<253

2nddefinitive test

<-20

<253

Mean value

<-20

<253

 

Both samples did not freeze during the study.

 

Conclusions:
A freezing temperature of <-20°C (<253 K) was determined for the substance in accorrdance with EU Method A.1 and in compliance with GLP. The result is considered reliable.
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The result is sourced from a secondary literature (MSDS). The original reference was not available for review and no further information is available.
Principles of method if other than guideline:
Information on method and guideline not stated.
GLP compliance:
not specified
Melting / freezing pt.:
-136 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: Standard atmospheric pressure assumed.
Conclusions:
A melting point value of -136°C was reported for the substance in a secondary source to which no reliability could be assigned.

Description of key information

Melting point [tetrahydro-2-methylfuran]: <-20°C (<253 K) (EU Method A.1)

Key value for chemical safety assessment

Additional information

A measured freeing point of <-20°C (<253 K) was determined for the substance in accordance with EU Method A.1 and in compliance with GLP. The result is considered to be reliable and selected as key study. This value is supported by a melting point of -136°C which was reported for the substance in a secondary source to which reliability could not be assigned.