Eucalyptus globulus, ext.

Melting point / freezing point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

melting point/freezing point

Type of information:

not specified

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Data comes from an online compilation using secondary data sources. There is no experimental study reference, however data is cited in the database as peer reviewed. Therefore it is considered as reliable, but with restrictions due to lack of details.

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other study

Principles of method if other than guideline:

No data.

Melting / freezing pt.:

1.5 °C

Executive summary:

The HSDB database provides, as secondary source, some physico-chemical properties. A melting/freezing point of 1.5°C is cited for cineole.

Reference 2

Endpoint:

melting point/freezing point

Type of information:

not specified

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Data comes from an online compilation using secondary data sources. There is no experimental study reference, however data is cited in the database as peer reviewed. Therefore it is considered as reliable, but with restrictions due to lack of details.

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other study

Principles of method if other than guideline:

No data.

Melting / freezing pt.:

-62.5 °C

Executive summary:

The HSDB database provides, as secondary source, some physico-chemical properties. A melting/freezing point of -62.5°C is cited for alpha-pinene.

Reference 3

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

comparable to guideline study

Remarks:

The study has been conducted according to guidance on NCS. The substance is adequately caracterised. Therefore full validation applies.

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

other: EFFA/EFEO guideline "The Registration for REACH of Natural Complex Substances used as Fragrance Ingredients"

GLP compliance:

no

Type of method:

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

Key result

Melting / freezing pt.:

< -20 °C

Temperature	+20°C	+5°C for 48h	-20°C for 48h
State of sample 1	clear mobile liquid	clear mobile liquid	clear mobile liquid
State of sample 2	clear mobile liquid	clear mobile liquid	clear mobile liquid

 

The state of the sample and the colour have remained unchanged.

Viscosity increased at the lowest temperature.

Conclusions:

Freezing point < -20°C.
No further testing required.

Executive summary:

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

Description of key information

Crude quality: Freezing point < -20°C (exp.).

Rectified quality: Freezing point anticipated < +5°C (extrap.).

Additional information

An experimental study is available for the crude quality, based on observation at given temperatures (+5°C and -20°C), as recommended for NCS: the substance remained liquid at the lowest temperature tested.

For the rectified quality, literature data for the two components showing the highest variation in the composition (i.e. cineole, m.p.=1.5°C, increase by ca +20%, and alpha-pinene, m.p.=-62.5°C, decrease by ca -18%) show that increase of freezing point is anticipated. However, based on these values, it is expected to remain at least below the testing threshold of +5°C.

Results expressed as limit values cannot be retained as key data for purpose of CSA.

It should be noted that due to UVCB nature of the substance, batch variations are expected.