Lavandula hybrida oil, light fraction

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

03 and 4 october 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Justification for type of information:

The study has been conducted according to guidance on NCS (Natural Complex Substance). The substance is adequately caracterised. Therefore full validation applies.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other:

Version / remarks:

internal method : see protocol below

Principles of method if other than guideline:

The test item is a mixture of constituents and transition from liquid to solid will not be sharp. The „Guidance on information requirements and chemical safety assessment Chapter R.7a: Endpoint specific guidance” from ECHA (2008), mentioned that "Melting points are not normally carried out for mixtures“. In addition, according to column 2, point 7.2 of Annex VII of Regulation (EC) 1907/2006 (REACH), "The study does not need to be conducted below a lower limit of -20°C“.
Therefore it is recommended in the EFFA/EFEO guideline „The Registration for REACH of Natural Complex Substances used as Fragrance Ingredients” to describe the state of the essential after equilibrium at +20°C, +5°C and -20°C.

GLP compliance:

no

Type of method:

other: Visual observation after equilibrium at +20°C, +5°C and -20°C.

Test material

Test material information

Constituent 1

Reference substance name:

Linalool

EC Number:

201-134-4

EC Name:

Linalool

Cas Number:

78-70-6

Molecular formula:

C10H18O

IUPAC Name:

3,7-dimethylocta-1,6-dien-3-ol

Test material form:

liquid: volatile

Specific details on test material used for the study:

same substance such as described in section 1

Results and discussion

Melting / freezing point

Melting / freezing pt.:

< -20 °C

Decomposition:

no

Sublimation:

no

Any other information on results incl. tables

APPARATUS

Refrigerator (+5°C) Freezer (-20°C) Thermometer (-50°C to 200°C; +/- 0,5°C)

PROCEDURE

x ml of sample were stored at +5°C in a refrigerator for 2 days in a glass test tube.

Another x ml of the sample were stored at -20°C in a freezer for 2 days in a glass test tube too. Temperature was controlled with a thermometer placed inside the refrigerators for the duration of the experiment, before introducing the samples, after 24 h and at the end of the period. The state of the samples were described before storage and after equilibration at low temperatures.

Applicant's summary and conclusion

Conclusions:

The freezing point is below -20°C.

Executive summary:

The physical state of the test substance was observed after 2-day equilibration at +20°C, +5°C and -20°C, according to EFFA/EFEO Recommendations for NCS. The sample remained liquid.