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Physical & Chemical properties

Vapour pressure

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Administrative data

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-01-20
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Test procedure in accordance with national standard methods (NFT) without GLP.
Qualifier:
according to guideline
Guideline:
other: NFT 20-048
GLP compliance:
no
Type of method:
isoteniscope
Temp.:
20 °C
Vapour pressure:
1.7 Pa
Temp.:
50 °C
Vapour pressure:
34.5 Pa

Measurement

(repeat determination)

Temperature in °C: 20.0 / 20.0

Vapour pressure in Pa: 1.7 / 1.7

Average vapour pressure in Pa: 1.7

(repeat determination)

Temperature in °C: 50.0 / 50.0

Vapour pressure in Pa: 35.0 / 34.0

Average vapour pressure in Pa: 34.5

Conclusions:
Vapour pressure of Alchem 9/99: 1.7 Pa at 20 °C, 34.5 Pa at 50 °C
Executive summary:

Nonan-1-ol was determined according NFT 20 -048. The vapour pressure was determined to be 1.7 Pa at 20 °C and 34.5 Pa at 50 °C.

Description of key information

The vapour pressure of a commercial nonan-1-ol sample is 1.7 Pa at 20°C. It is supported by a consistent and reliable measurement of 3 Pa at 25°C using a highly pure sample (Daubert and Danner, 1989).

Key value for chemical safety assessment

Vapour pressure:
1.7 Pa
at the temperature of:
20 °C

Additional information

The vapour pressure of 1.7 Pa was determined at 20°C in a reliable study.

It is supported by a consistent and reliable measurement of 3 Pa at 25°C using a highly pure sample is available (Daubert and Danner, 1989). A value of 1.63 Pa at 25°C, taken from a reliable reference source (Boublik et al., 1984) is also available.

The quantified value at ambient temperature from Daubert and Danner is used in environmental modelling.

Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:

As chain length increases, vapour pressure decreases. This is because molecular weight is higher and

intermolecular forces in the substance are all higher.