IN VITRO STUDIES FURTHER DETAILS
In Vitro Study No: 78
METHODS
Chemical
Conc. (mg/ml)
Volume (ml)
Loading (mg/cm2)
Vehicle
Species
Membrane
Site
Area (cm2)
Cell Type
Receptor Fluid
Temp. (oC)
Temp. Measured
Exposure Time (h)
Study Length (h)
Occluded
Analytical Method
Benzoic Acid
1
Water
Testskin TM
3microm pore size polycarbonate membrane
N/A
0.5
Static
LDE Assay Medium
32
Water Bath
24
24
2
Radiolabelled (14C)
RESULTS
% Recovery
+/-
% In Stratum Corneum
+/-
% in Viable Skin
+/-
% Penetrated
+/-
% Absorbed
+/-
s-s-flux (mcrg/cm2/h)
+/-
kp (cm/h)
n
Lag Time (h)
0.086
3
NOTES
Did not say how much Benzoic Acid was added/ml water. Samples were taken at hourly intervals and Kp calculated from s-state portion of curves % applied dose/h/cm2
REFERENCE
The Living Skin Equivalent As A Model In Vitro For Ranking The Toxic Potential Of Dermal Irritants (1992) Toxicol. Vitro, 6 :303-315