Chemical Route of Entry for Sodium Hydroxide Skin Contact

Question:

Howard is working with a cleaning solution that contains sodium hydroxide. Although he is using gloves, when he pours the solution to dilute it for cleaning use, he spills a bit on his arm. His arm feels slimy to the touch and now has a burn mark. What is the chemical route of entry?

Expert Verified Answer:

In the scenario where Howard spills a cleaning solution containing sodium hydroxide on his arm, the chemical route of entry is through “dermal contact.” Sodium hydroxide, also known as lye or caustic soda, is a strong base that can cause severe skin burns upon contact. The chemical route of entry refers to the way a substance enters the body. For Howard, the sodium hydroxide entered his body through his skin, which is a direct exposure route. Despite wearing gloves, the spill on his arm led to skin contact, resulting in a burn. This situation highlights the importance of proper protective equipment and handling procedures when working with hazardous chemicals.