Registration Dossier
Registration Dossier
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EC number: 290-010-3 | CAS number: 90063-52-8 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Citrus aurantifolia, Rutaceae.
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Visual observation in line with ECHA guidance documents.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Distilled lime oil is a mixture of substances 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 mentions in chapter R7.1.2.3, that «Melting points are not normally carried out for mixtures ». 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 oil after two days at +5°C and -20 °C rather than determining a transition temperature. As it is common knowledge that citrus oils are liquid at +5 °C only a test at -25 °C was carried out in this examination.
- GLP compliance:
- not specified
- Type of method:
- other: Visual observation
- Key result
- Melting / freezing pt.:
- < -25 °C
- Remarks on result:
- other: Lime oil is a mixture of substances and transition from liquid to solid will not be sharp. As it is common knowledge that citrus oils are liquid at +5 °C only a test at -25 °C was carried out in this examination. No freezing point could be derived.
- Conclusions:
- Distilled lime oil is a clear mobile liquid at 20 degrees Celsius and a clear mobile liquid with some white needles at -25 degrees Celsius after 67h.
- Executive summary:
Distilled lime oil oil is a mixture of substances 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 mentions in chapter R7.1.2.3, that «Melting points are not normally carried out for mixtures ». 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 oil after two days at +5°C and -20 °C rather than determining a transition temperature. As it is common knowledge that citrus oils are liquid at +5 °C only a test at -25 °C was carried out in this examination.
Lime oil was found to be a clear mobile liquid at 20 degrees Celsius and a clear mobile liquid with some white needles at -25 degrees Celsius after 67h.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Visual observation in line with ECHA guidance documents.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Cold pressed lime oil is a mixture of substances 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 mentions in chapter R7.1.2.3, that «Melting points are not normally carried out for mixtures ». 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 oil after two days at +5°C and -20 °C rather than determining a transition temperature. As it is common knowledge that citrus oils are liquid at +5 °C only a test at -25 °C was carried out in this examination.
- GLP compliance:
- not specified
- Type of method:
- other: Visual observation
- Conclusions:
- Cold pressed lime oil is a clear mobile liquid at 20 degrees Celsius and a slightly turbid mobile liquid with crystalline precipitate at -25 degrees Celsius after 67h.
- Executive summary:
Cold pressed lime oil oil is a mixture of substances 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 mentions in chapter R7.1.2.3, that «Melting points are not normally carried out for mixtures ». 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 oil after two days at +5°C and -20 °C rather than determining a transition temperature. As it is common knowledge that citrus oils are liquid at +5 °C only a test at -25 °C was carried out in this examination.
lime oil was found to be a clear mobile liquid at 20 degrees Celsius and a slightly turbid mobile liquid with crystalline precipitate at -25 degrees Celsius after 67h.
Referenceopen allclose all
Results:
Temperature |
+20 °C |
-25 °C for 67 h |
State of sample |
clear mobile liquid |
clear mobile liquid with some white crystal needles |
See also attached photographs.
Results:
Temperature |
+20 °C |
-25 °C for 67 h |
State of sample |
clear mobile liquid |
slightly turbid mobile liquid with crystalline precipitate |
See also attached photographs.
Description of key information
Description of physical state: clear mobile liquid at 20 degrees Celsius. A clear mobile liquid with some white needles at -25 degrees Celsius after 67h.
Key value for chemical safety assessment
Additional information
In a key study according to the NCS protocol, distilled lime oil was found to be a clear mobile liquid at 20 degrees Celsius and a clear mobile liquid with some white needles at -25 degrees Celsius after 67h. A supporting study on cold-pressed lime oil reported that this substance is a clear mobile liquid at 20 degrees Celsius and a slightly turbid mobile liquid with crystalline precipitate at -25 degrees Celsius after 67h.
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