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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:
1989
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
according to
Guideline:
other: EPA-TSCA guideline 796.1950
GLP compliance:
yes
Type of method:
gas saturation method
Temp.:
60 °C
Vapour pressure:
0 Pa
Temp.:
25 °C
Vapour pressure:
< 0 Pa
Transition / decomposition:
no

The vapour pressure of piperonyl butoxide was determined by coating non-radiolabeled piperonyl butoxide onto purified white sand, volatilizing the test material from the sand at 60°C at 5mL/min, trapping the volatilized material using SPICE C18 resin traps and employing HPLC analysis to determine the amount of material volatilized.

Vapour pressure at 25°C is calculated to be less than 0.0000133 Pa.

Conclusions:
The vapor pressure of substance was determined at 60°C using the gas-saturation technique. The average vapor pressure at each temperature was determined by averaging the results of the three separate test systems using a low (≈ 5mL/min) flow rate. The vapor pressure of substance at 60°C was determined to be 2.11*10^-5 Pa. The vapor pressure at 25°C will be less than 1.33*10^-5 Pa.

Description of key information

The vapor pressure of PBO at 60°C was determined to be 2.11*10^-5 Pa (EPA-TSCA guideline 796.1950).

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
60 °C

Additional information

The vapor pressure of substance was determined at 60°C using the gas-saturation technique. The average vapor pressure at each temperature was determined by averaging the results of the three separate test systems using a low (≈ 5mL/min) flow rate. The vapor pressure of substance at 60°C was determined to be 2.11*10^-5 Pa.

The vapor pressure at 25°C will be less than 1.33*10^-5 Pa.