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.
CaO
F.W. 56.08
Options:
Hazard Alert
Corrosive; dangerous in contact with organic material; exposure to water or moisture evolves heat. A lump of calcium oxide may disintegrate violently when water is added. Wear eye protection when handling this substance. TLV 2 mg/m3.