Which compound can be identified with a "boiled lobster" appearance?

The "boiled lobster" appearance is a characteristic manifestation associated with boric acid poisoning, particularly in cases of acute exposure. This presentation is typically seen in the skin, where an individual may exhibit erythema and skin lesions that resemble the redness and blistering observed on a boiled lobster. This effect results from the irritant properties of boric acid on the skin and other tissues.

In contrast, phenol can present with serious systemic effects and skin burns, but it does not produce the distinct "boiled lobster" appearance. Metals like arsenic or lead can cause different toxicological effects and have their own specific signs and symptoms but are not characterized by this particular visual feature. Carbon dioxide in excess can lead to asphyxia and other systemic manifestations, but does not cause any specific skin appearance analogous to the boiled lobster. Therefore, the association of the "boiled lobster" appearance is unique to boric acid exposure, making it the correct answer.