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31.18 How fast do solvents pass through human skin?




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This article is from the Chemistry FAQ, by Bruce Hamilton B.Hamilton@irl.cri.nz with numerous contributions by others.

31.18 How fast do solvents pass through human skin?

It obviously depends on the solvents, and traditional measurements have
been made using dead skin, but some recent work has provided a simple
comparison of individual solvents. It must be emphasised that mixtures of
solvents may have significantly different rates [29].

                                Permeability Constants in g/m2h 
 Solvent                        Average          Standard Deviation
 Dimethylsulfoxide                176                   42
 N-Methyl-2-pyrrolidone           171                   59
 Dimethylacetimide                107                   19
 Dimethylformamide                 98                    1.1
 Methyl ethyl ketone               53                   29
 Methylene chloride                24                    8.4
 Water  [^3H radiolabeled]         14.8                  0.1
 Ethanol                           11.3                  0.5
 Butyl acetate                      1.6                  0.1
 gamma butyrolactone                1.1                  0.1
 Toluene                            0.8                  0.7
 Propylene carbonate                0.7                  0.4
 Sulfolane                          0.2

 

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