Cyclohexyldimethoxymethylsilane

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1995-06-16 to 1995-09-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

method to determine freezing temperature

Key result

Melting / freezing pt.:

< -20 °C

Atm. press.:

101.3 kPa

Key result

Melting / freezing pt.:

< 253 K

Atm. press.:

101.3 kPa

Table 1: Determination 1

Time (Seconds)	Temperature (K)	Time (Seconds)	Temperature (K)
0	293	690	270
30	291	720	269
60	290	750	268
90	289	780	268
120	287	810	267
150	286	840	266
180	285	870	265
210	284	900	264
240	283	930	263
270	282	960	262
300	281	990	261
330	281	1020	261
360	280	1050	260
390	279	1080	259
420	278	1110	258
450	277	1140	258
480	276	1170	257
510	276	1200	256
540	275	1230	255
570	274	1260	255
600	273	1290	254
630	272	1320	253
660	271	1350	253

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

Table 2: Determination 2

Time (Seconds)	Temperature (K)	Time (Seconds)	Temperature (K)
0	294	750	269
30	292	780	268
60	291	810	267
90	290	840	266
120	289	870	265
150	288	900	264
180	287	930	264
210	285	960	263
240	284	990	262
270	283	1020	261
300	282	1050	260
330	281	1080	260
360	280	1110	259
390	279	1140	258
420	277	1170	258
450	276	1200	257
480	276	1230	256
510	275	1260	256
540	274	1290	255
570	274	1320	255
600	273	1350	254
630	272	1380	254
660	271	1410	253
690	270	1440	253
720	270

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

Conclusions:

A freezing temperature value of <-20°C (253 ±0.5 K) at 1013 hPa has been determined for the substance using an appropriate test method and in-line with GLP. The result is considered reliable.

Description of key information

Freezing point: <-20°C at 1013 hPa (EU Method A1)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-20 °C

Additional information

Three reliable measured melting/freezing point results are available for cyclohexyl(dimethoxy)methylsilane. A measured freezing point value of <-20°C at 1013 hPa was determined for the submission substance using EU Method A.1 and in compliance with GLP. The result is considered to be reliable and is selected as key study.

In another study used as supporting data, a melting point of <-50°C at 1013 hPa was determined for the submission substance using a capillary method and in compliance with GLP. Similarly, a measured melting point value of -72°C was determined for the substance. Although full details are not available for this study, the result is also considered reliable. The supporting studies are in good agreement with the key study that the freezing point of the substance is <-20°C. The key study was selected as the most recent study.