Is diethyl malonate a solid or liquid?

Diethyl malonate is a colorless, transparent liquid at room temperature, not a solid, and has a faint, pleasant fruity aroma, similar to apples or grapes. It has low solubility in water but is readily soluble in ethanol, ether, and other common organic solvents. Diethyl malonate is widely used in pharmaceutical synthesis, pesticide production, fragrance formulation, and chemical research.

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