Cats were used in this study to demonstrate the effect of dilute corrosive drain cleaners upon the esophagus. Sulfuric acid, potassium hydroxide, and sodium hydroxide in less than 10% strength all produced gross and microscopic evidence of severe damage after 30-second exposure. We suggest that presently allowable concentrations of these agents for household use should be banned and cite clinical data on accidental injury in childhood to suggest that "child-proof" packages will not afford much protection.
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Ashcraft et al. (1974) studied this question.