Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.
Propanedioic acid
HO2CCH2CO2H
F.W. 104.06
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Hazard Alert
Strong irritant; slightly toxic; when dissolved in water it is a strong acid; corrosive to eyes, skin and respiratory tract. Malonic acid has been used as a drug intermediate (precursor). This substance is regulated in some states like California. Check local regulations before purchasing. LD50 1310 mg/kg.