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EC number: 232-077-3 | CAS number: 7785-26-4
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- September 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Well documented study performed according to OECD 103 guideline and EU method A.2, under GLP and without deviation
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- 2015-03-05
- Type of method:
- differential scanning calorimetry
- Boiling pt.:
- ca. 155.5 °C
- Atm. press.:
- ca. 1 018.3 hPa
- Decomposition:
- no
- Remarks on result:
- other: First determination
- Boiling pt.:
- ca. 155.2 °C
- Atm. press.:
- ca. 1 025.5 hPa
- Decomposition:
- no
- Remarks on result:
- other: Second determination
- Key result
- Boiling pt.:
- ca. 155 °C
- Atm. press.:
- ca. 101.3 kPa
- Remarks on result:
- other: Corrected value with the Sydney Young equation
- Conclusions:
- According to OECD 103 guideline and EU method A.2, the initial boiling point of substance (-)-alpha-pinene was determined as 155.0°C at 101.3 kPa after correction using the Sydney Young equation.
- Executive summary:
A study was performed to determine the boiling point of test item (-)-alpha-pinene. The method used was Differential Scanning Calorimetry (DSC) and the test was according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103, "Boiling Point" (1995)
In this method, two crucibles were put in the apparatus furnace under inert atmosphere (helium) at atmospheric pressure. One crucible contained the test item, the other was empty and considered as the reference. A specific temperature program was applied. Heat flow differences between the two crucibles and mass variation were recorded on a thermogram.
Two trials were conducted and corresponding thermograms were obtained, giving us the following results:
Trial
Initial boiling point
Ambient pressure
1
155.5°C
1018.3 hPa
2
155.2°C
1025.5 hPa
This study respects validity criteria (the difference temperature between the two determinations is less than 1°C), therefore it is considered valid.
After correction using the Sydney Young equation, the initial boiling point of the substance was determined as 155.0°C at 101.3 kPa.
Reference
Pre-study:
Peaks assigned to the boiling of the substance were observed and measurement was stopped at 550°C (Figure 1).Temperatures corresponding to these peaks were used to create the following temperature program:
Temperature program:
Step |
Initial temperature (°C) |
Final Temperature (°C) |
Heating rate (°C/min) |
Duration (min) |
Furnace atmosphere |
Rate* (mL/min) |
Liquid nitrogen cooling |
1 |
20 |
-120 |
10 |
14 |
He |
60 |
YES |
2 |
-120 |
-120 |
0 |
5 |
He |
60 |
NO |
3 |
-120 |
210 |
10 |
40 |
He |
60 |
NO |
*Gas injection rate in the furnace.
First Determination:
Mass taken: 11.01 mg
Results
Initial boiling point is observed at 155.5°C (onset temperature of the first peak) and a corresponding mass loss is observed on the TG curve, showing that all the substance was evaporated at the end of the study.
The crucible was visually checked after the determination: By opening the crucible, no test item left in the crucible and no sign of decomposition was observed.
Atmospheric pressure: 1018.3 hPa
Second Determination:
Mass taken: 13.32 mg
Results :
Initial boiling point is observed at 155.2°C(onset temperature of the first peak) and a corresponding mass loss is observed on the TG curve, showing that all the substance was evaporated at the end of the study.
The crucible was visually checked after the determination: By opening the crucible, no test item left in the crucible and no sign of decomposition was observed.
Atmospheric pressure: 1025.5 hPa
Description of key information
The initial boiling point of substance (-)-alpha-pinene was determined as 155.0°C at 101.3 kPa.
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 155 °C
Additional information
Key study conducted according to the OECD 103 Guideline and the EU A.2 method, under GLP without deviation and with certificate of analysis included. Therefore, a reliability of 1 is assigned and the result of this key study is proposed as the end point value.
This result is supported by consistent experimental data obtained with alpha-pinene multiconstituent.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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