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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental starting date: 02 November 2017. Experimental completion date: 02 November 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: vapour pressure balance
Specific details on test material used for the study:
Identification: 4-(1,1-dimethylethyl)cyclohexyl methacrylate (CAS 46729-07-1)
Alterative name: Nourycryl MC 110
Description: clear colourless liquid
Batch number: DAR-16030
Purity: 89.2%
Expiry date: 01 August 2018
Storage conditions: approximately 4°C, in the dark
Key result
Temp.:
25 °C
Vapour pressure:
2.88 Pa

Results

The direct values of the vapor pressure at 25 °C are shown in the following table:

Vapor Pressure Data at 25 °C

Run Mass Difference (μg) Vapor Pressure (Pa)
1 1933.14 2.684
2 1902.68 2.641
3 1985.9 2.757
4 2080.44 2.888
5 2136.17 2.966
6 2154.02 2.99
7 2158.51 2.997
8 2147.55 2.981
9 2137.34 2.967
10 2114.1 2.935

Mean vapor pressure at 25 °C: 2.88 Pa

Discussion

The test item did not visually change in appearance under the conditions used.

Conclusions:
The vapor pressure of the test item by the balance method has been determined to be 2.88 Pa at 25 °C (298 K).
Executive summary:

The vapor pressure of 4-(1,1-dimethylethyl)cyclohexyl methacrylate (CAS 46729-07-1) has been determined to be 2.88 Pa at 25 °C (298 K), using the balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.

Description of key information

The measured vapour pressure is 2.88 Pa @ 25 oC

Key value for chemical safety assessment

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

Additional information