Tall oil

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:

2009-11-09 to 200-02-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study was conducted according to OECD 102 test guideline, and in compliance with GLP.

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

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.:

253 K

Decomposition:

no

Sublimation:

no

Results

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

Determination 1

Time(s)	Temperature (K)	Time(s)	Temperature (K)
0	294	930	265
30	293	960	264
60	292	990	263
90	291	1020	263
120	290	1050	262
150	289	1080	261
180	288	1110	260
210	287	1140	260
240	286	1170	259
270	285	1200	259
300	284	1230	258
330	283	1260	258
360	282	1290	258
390	281	1320	257
420	281	1350	257
450	280	1380	256
480	279	1410	256
510	278	1440	256
540	278	1470	255
570	277	1500	255
600	275	1530	255
630	274	1560	254
660	273	1590	254
690	272	1620	254
720	271	1650	254
750	270	1680	253
780	269	1710	253
810	268	1740	253
840	267	1770	253
870	266	1800	253
900	266	1830	252

Observations:           The test material became increasingly viscous during cooling

Result:                       Freezing temperature <253 K (-20.15 C)

Determination 2

Time(s)	Temperature (K)	Time(s)	Temperature (K)
0	294	840	263
30	293	870	263
60	292	900	262
90	291	930	262
120	289	960	261
150	288	990	261
180	287	1020	260
210	285	1050	259
240	284	1080	258
270	283	1110	258
300	282	1140	258
330	281	1170	258
360	280	1200	258
390	279	1230	257
420	278	1260	257
450	277	1290	257
480	276	1320	257
510	275	1350	256
540	274	1380	256
570	273	1410	255
600	272	1440	255
630	271	1470	254
660	270	1500	254
690	268	1530	253
720	267	1560	253
750	266	1590	253
780	265	1620	253
810	264	1650	252

Observations:          The test material became increasingly viscous during cooling

Result:                       Freezing temperature <253 K (-20.15 C)

Observation: The test material became increasingly viscous during cooling

Conclusions:

A Freezing temperature value of less than 253 ± 0.5°K (-20.15°C) was determined in a reliable study conducted according to OECD 102, and in compliance with GLP.

Description of key information

Freezing Temperature: <253 K (-20.15°C) OECD 102

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

253 K

Additional information

A freezing temperature of <253 K (-20.15°C) has been determined for the test substance in a reliable study conducted in accordance to OECD 102. The substance was observed to become increasingly viscous during cooling.