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Physical & Chemical properties

Vapour pressure

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Endpoint:
vapour pressure
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.
Temp.:
25 °C
Vapour pressure:
253 Pa

original data = 1.90 mm Hg

Executive summary:

The HSDB database provides, as secondary source, some physico-chemical properties. A vapor pressure value of 1.90 mm Hg at 25°C is cited for cineole.

Endpoint:
vapour pressure
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.
Temp.:
25 °C
Vapour pressure:
633 Pa

original data = 4.75 mm Hg

Executive summary:

The HSDB database provides, as secondary source, some physico-chemical properties. A vapor pressure value of 4.75 mm Hg at 25°C is cited for alpha-pinene.

Endpoint:
vapour pressure
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.
Temp.:
25 °C
Vapour pressure:
207 Pa
Remarks on result:
other: extrapolated

original data = 1.55 mm Hg

Executive summary:

The HSDB database provides, as secondary source, some physico-chemical properties. A vapor pressure value of 1.55 mm Hg at 25°C is cited for limonene.

Description of key information

Calculated values from data on major components (ranging between 207 and 633 Pa):

Crude quality: ca 351 Pa at 25°C

Rectified quality: ca 262 Pa at 25°C

Key value for chemical safety assessment

Vapour pressure:
351 Pa
at the temperature of:
25 °C

Additional information

No study was conducted on the oil iself, as not relevant for an UVCB.

Literature provided data for the three major components: cineole, VP ca 253 Pa, limonene, VP ca 207 Pa, and alpha-pinene, VP ca 633 Pa (at the same temperature of 25°C).

Following recommendations for the registration of type 1 NCSs, the VP was calculated as the sum of the partial pressure of known constituents (molar fraction), based on the following typical compositions:

crude quality:

60.8% cineol, 4.6% limonene, and 21% alpha-pinene

rectified quality:

80% cineol, 8% limonene, and 3% alpha-pinene

Crude quality has been considered as key value for purpose of CSA in a worst-case approach.