Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: 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.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report Date:
1995

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
The work described was performed in compliance with the UK Principles of Good Laboratory Practice (The United Kingdom Compliance Programme, Department of Health 1989).
Type of method:
thermal analysis

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Melting / freezing point
Melting / freezing pt.:
< 253 K

Any other information on results incl. tables

Results

Determination 1:

Time (seconds) Temperature (K) Time (seconds) Temperature (K)
0 290 870 264
30 290 900 263
60 289 930 262
90 288 960 262
120 287 990 261
150 285 1020 260
180 283 1050 260
210 283 1080 259
240 282 1110 259
270 281 1140 258
300 280 1170 258
330 279 1200 257
360 278 1230 257
390 275 1260 256
420 274 1290 256
450 274 1320 256
480 273 1350 255
510 272 1380 256
540 271 1410 256
570 270 1440 255
600 269 1470 255
630 269 1500 255
660 268 1530 254
690 267 1560 254
720 266 1590 254
750 266 1620 253
780 265 1650 <253
810 264 1680 <253
840 264

Determination 2:

Time (seconds) Temperature (K) Time (seconds) Temperature (K)
0 293 570 266
30 291 600 265
60 289 630 264
90 287 660 263
120 285 690 262
150 284 720 261
180 282 750 260
210 280 780 259
240 279 810 258
270 277 840 258
300 275 870 257
330 274 900 256
360 273 930 256
390 272 960 255
420 271 990 255
450 270 1020 254
480 269 1050 253
510 268 1080 <253
540 267 1110 <253

No evidence of solidification or freezing of the test material was observed down to a temperature of 253 +/- 0.5 K.

Applicant's summary and conclusion

Conclusions:
The freezing temperature of Alkane 2 has been determined to be less than 253 +/- 0.5 K
Executive summary:

The freezing point of Alkane 2 has been determined to be less than 253 +/- 0.5 K.

The experimental procedure used complied with that specified in Method A1 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC).