Oxirane, mono[(C10-16-alkyloxy)methyl] derivs.

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

supporting study

Study period:

Between 12 February and 21 April 2012

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: Cited from ECHA disseminated dossier Query date: 2015-07-22 For justification of read across please refer to IUCLID section 13.

Data source

Reference

Reference Type:

other: ECHA disseminated dossier

Title:

No information

Report date:

2015

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes

Type of method:

method to determine freezing temperature

Test material

Test material information

Constituent 1

Reference substance name:

939-183-5

EC Number:

939-183-5

IUPAC Name:

939-183-5

Details on test material:

Identification: ERC#18
Description: clear colorless liquid
Batch: 9114460/002
Purity: 100% (UVCB)
Expiry / Retest Date: 23 January 2013
Storage Conditions: room temperature in the dark

Results and discussion

Any other information on results incl. tables

Results

Definitive Testing

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

 

Table 1       Determination 1

 

Time(s)	Temperature (K)	Time(s)	Temperature (K)
0	295	840	267
30	293	870	267
60	291	900	266
90	289	930	266
120	287	960	266
150	285	990	266
180	283	1020	266
210	282	1050	265
240	281	1080	265
270	278	1110	265
300	277	1140	265
330	276	1170	265
360	275	1200	264
390	274	1230	264
420	274	1260	264
450	273	1290	263
480	272	1320	263
510	271	1350	263
540	270	1380	263
570	270	1410	263
600	269	1440	263
630	268	1470	262
660	268	1500	262
690	268	1530	262
720	268	1560	262
750	267	1590	262
780	267	1620	261
810	267	1650	261

 

 

Table 1(continued)           Determination 1

 

Time(s)	Temperature (K)	Time(s)	Temperature (K)
1680	261	2220	257
1710	261	2250	257
1740	261	2280	257
1770	261	2310	257
1800	260	2340	257
1830	260	2370	257
1860	260	2400	256
1890	260	2430	256
1920	259	2460	256
1950	259	2490	256
1980	259	2520	256
2010	259	2550	256
2040	258	2580	255
2070	258	2610	255
2100	258	2640	255
2130	258	2670	255
2160	258	2700	255
2190	258	2730	255

 

Observations:   The test item did not demonstrate a well defined freezing point, but changed from clear to white from 268 K (-5.0 °C) and was described as being a paste from 266 K (-7.0 °C).

 

Table 2       Determination 2

 

Time(s)	Temperature (K)	Time(s)	Temperature (K)
0	295	1020	265
30	293	1050	265
60	291	1080	265
90	289	1110	265
120	287	1140	264
150	285	1170	264
180	283	1200	264
210	282	1230	264
240	281	1260	264
270	280	1290	263
300	279	1320	263
330	278	1350	263
360	276	1380	263
390	275	1410	263
420	274	1440	262
450	273	1470	262
480	272	1500	262
510	272	1530	262
540	271	1560	262
570	270	1590	261
600	269	1620	261
630	269	1650	261
660	268	1680	261
690	268	1710	261
720	267	1740	260
750	267	1770	260
780	267	1800	260
810	267	1830	260
840	266	1860	260
870	266	1890	260
900	266	1920	260
930	266	1950	259
960	266	1980	259
990	265	2010	259

 

 

Table 2(continued)            Determination 2

 

Time(s)	Temperature (K)	Time(s)	Temperature (K)
2040	259	2520	257
2070	259	2550	257
2100	258	2580	256
2130	258	2610	256
2160	258	2640	256
2190	258	2670	256
2220	258	2700	256
2250	258	2730	256
2280	258	2760	256
2310	258	2790	256
2340	257	2820	255
2370	257	2850	255
2400	257	2880	255
2430	257	2910	255
2460	257	2940	255
2490	257	2970	255

 

Observations:   The test item did not demonstrate a well defined freezing point, but changed from clear to white from 268 K (-5.5 °C) and was described as being a paste from 266 K (-7.0 °C).

 

 

Applicant's summary and conclusion

Conclusions:

The test item did not demonstrate a well defined freezing point. It was observed to change from clear to white from a temperature of approximately 268K (-5 °C) before transition to a white paste-like state. Although monitoring such a transition was very subjective, the test item was first described as a paste from a temperature of 266 K (-7 °C). Although no definitive temperature plateau coincided with these changes, a clear decrease in the rate of sample cooling was seen in the sample cooling curves from a temperature of 268 K (-5 °C) where the initial change in appearance was observed, consistent with a latent heat effect from a change of phase.

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.

The test item did not demonstrate a well defined freezing point. It was observed to change from clear to white from a temperature of approximately 268K (-5 °C) before transition to a white paste-like state. Although monitoring such a transition was very subjective, the test item was first described as a paste from a temperature of 266 K (-7 °C). Although no definitive temperature plateau coincided with these changes, a clear decrease in the rate of sample cooling was seen in the sample cooling curves from a temperature of 268 K (-5 °C) where the initial change in appearance was observed, consistent with a latent heat effect from a change of phase.