Which of the following compounds is recognized for its potential poisoning risk?

Sodium fluoride is recognized for its potential poisoning risk due to its toxic effects at elevated levels of exposure. It is commonly used in dental products and industrial applications, but when ingested or absorbed in excessive amounts, it can lead to serious health issues, including fluoride toxicity. Symptoms of sodium fluoride poisoning can include gastrointestinal distress, neurological issues, and even cardiovascular problems in severe cases.

While other compounds like iron oxide, lead acetate, and copper sulfate also have associated health risks, sodium fluoride is particularly notable because of its prevalence in everyday products and its significant impact on health when safety guidelines are not followed. Lead acetate, for example, is indeed toxic, but sodium fluoride is more commonly highlighted in discussions about public health, especially concerning dental care and fluoride treatments.