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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 08 July 2014 to 22 October 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
GLP compliance:
yes (incl. QA statement)
Type of method:
static method
Key result
Temp.:
25 °C
Vapour pressure:
6 800 Pa
Remarks on result:
other: mean of two runs.

Determination of the Vapour Pressure of 2,2-Difluoroethyl acetate:

























































































Temperature (°C)



Temperature (K)



1/Temperature (1/K)



Vapour pressure (Pa)



Log10 vapour pressure



Run 1



25



298



0.00335



6600



3.82



30



303



0.00330



9000



3.95



35



308



0.00325



11000



4.04



40



313



0.00319



13000



4.11



45



318



0.00314



16000



4.20



Run 2



25



298



0.00335



6800



3.83



30



303



0.00330



8500



3.93



35



308



0.00325



11000



4.04



40



313



0.00319



14000



4.15



45



318



0.00314



17000



4.23



 


The plot of Log10Vp against 1/T presented the following parameters and allowed to calculate from the two runs a mean vapour pressure value of 6800 Pa at 25°C:































 



Run 1



Run 2



Correlation:



-0.9948



-0.9993



Slope:



-1765



-1922



Intercept:



9.757



10.28



Vp (Pa) at 25°C:



6880



6760



 

Conclusions:
The vapour pressure of 2,2-Difluoroethyl acetate was found to be equal to 6800 Pa at 25°C.
Executive summary:

The vapour pressure of 2,2-Difluoroethyl acetate was investigated in a GLP-compliant study according to OECD test guideline 104 using static measurement procedure. The vapour pressure was determined to be equal to 6800 Pa at 25°C.

Description of key information

The vapour pressure of 2,2-Difluoroethyl acetate is equal to 6800 Pa at 25°C.

Key value for chemical safety assessment

Vapour pressure:
6 800 Pa
at the temperature of:
25 °C

Additional information

An experimental study performed under GLP compliance and in accordance with OECD test guideline 104 was flagged as a key study and assigned a Klimisch score of 1. It reports that the vapour pressure of 2,2-Difluoroethyl acetate was found to be 6800 Pa at 25°C.