Registration Dossier
Registration Dossier
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EC number: 942-471-3 | CAS number: 1581740-29-5
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:
- key study
- Study period:
- Testing was conducted between 25 August 2011 and 05 October 2011.
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- 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. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions. Study was for farnesene which is identical to test substance with exception that it has an additional degree of unsaturation (i.e. an additional double bond). Structure appears in "illustrations"
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: BS4633: Method for the Determination of Crystallizing Point, 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.
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- other: BS4633: Method for the Determination of Crystallizing Point, 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.
Test material
- Reference substance name:
- Farnesene
- IUPAC Name:
- Farnesene
- Reference substance name:
- (E)-7,11-dimethyl-3-methylenedodeca-1,6,10-triene
- EC Number:
- 242-582-0
- EC Name:
- (E)-7,11-dimethyl-3-methylenedodeca-1,6,10-triene
- Cas Number:
- 18794-84-8
- IUPAC Name:
- 7,11-dimethyl-3-methylenedodeca-1,6,10-triene
- Test material form:
- other: liquid
- Details on test material:
- Sponsor's identification: Farnesene
Description : clear, colourless liquid
Chemical name: trans-β-Farnesene;
trans-7,11-dimethyl-3-methylene-1,6,10-dodecatriene
(6E)-7,11-dimethyl-3-methylidenedodeca-1,6,10-triene
CAS number : 18794-84-8
Empirical fomula: C15H24
PHYSICO-CHEMICAL PROPERTIES of Farnesene (surrogate)
- Melting point: 253K
- Boiling point: 250 - 260 C
- Vapour pressure:
- Water solubility (under test conditions):<0.0001 g/L at 20 C
- log Pow: >6.5
-Density: 0.83
Molecular weight = 204
Molecular Formula C15H24
Constituent 1
Constituent 2
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- < 253 K
- Decomposition:
- no
- Sublimation:
- no
Any other information on results incl. tables
Results
Cooling data for Determinations 1 and 2 are shown in the following tables:
Table 4.1 Determination 1
Time(s) |
Temperature (°C) |
Time(s) |
Temperature (°C) |
0 |
23.0 |
480 |
-9.5 |
30 |
22.5 |
510 |
-11.0 |
60 |
22.0 |
540 |
-11.5 |
90 |
21.5 |
570 |
-12.5 |
120 |
21.5 |
600 |
-13.0 |
150 |
19.0 |
630 |
-14.0 |
180 |
8.0 |
660 |
-15.0 |
210 |
5.5 |
690 |
-15.5 |
240 |
4.0 |
720 |
-16.0 |
270 |
1.0 |
750 |
-17.0 |
300 |
0.0 |
780 |
-18.0 |
330 |
-1.0 |
810 |
-19.0 |
360 |
-4.5 |
840 |
-20.0 |
390 |
-6.0 |
870 |
-21.0 |
420 |
-7.5 |
900 |
-22.0 |
450 |
-8.5 |
|
|
Observation:the test item had become a slightly hazy liquid.
Table 4.2 Determination 2
Time(s) |
Temperature (°C) |
Time(s) |
Temperature (°C) |
0 |
22.5 |
480 |
-8.0 |
30 |
22.0 |
510 |
-9.0 |
60 |
20.5 |
540 |
-9.5 |
90 |
18.0 |
570 |
-11.0 |
120 |
15.0 |
600 |
-12.0 |
150 |
12.0 |
630 |
-12.5 |
180 |
11.0 |
660 |
-13.5 |
210 |
8.0 |
690 |
-14.5 |
240 |
6.0 |
720 |
-15.0 |
270 |
5.0 |
750 |
-16.5 |
300 |
2.0 |
780 |
-17.0 |
330 |
1.0 |
810 |
-17.5 |
360 |
0.0 |
840 |
-19.0 |
390 |
-4.0 |
870 |
-20.0 |
420 |
-6.0 |
900 |
-21.0 |
450 |
-7.0 |
930 |
-22.0 |
Observation:the test item had become a slightly hazy liquid.
Overall Result: Freezing temperature <-20°C (<253 K)
See Attachments for Graphs.
Applicant's summary and conclusion
- Conclusions:
- The freezing temperature of the test item has been determined to be less than -20°C (<253 K).
- Executive summary:
Less than -20°C (253 K) using BS4633: Method for the Determination of Crystallizing Point, 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
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