According to the safety data sheet, what is a significant hazard of diethyl ether?

Diethyl ether is well-known for its flammability, which stems from its low flash point and high vapor pressure. It easily forms explosive mixtures with air, making it particularly hazardous when in environments where sparks or open flames might be present. The vapor can ignite rapidly, leading to fire and explosion risks.

While diethyl ether does present concerns regarding its toxicity, corrosiveness, and potential carcinogenic effects, flammability is considered a primary hazard that is crucial for laboratory safety. Always following safety protocols, such as working in a fume hood and using proper personal protective equipment, is vital when handling such volatile substances.