Free Shipping on Orders over $199
Due to extreme weather, the Flinn Warehouse is not shipping today, 1/23/2026.
We expect to resume normal shipping on Monday, 1/26/2026.
We regret this inconvenience. For more information, please call us at 800-452-1261.
Price: $9.99
In Stock.
Caustic soda, soda lye
NaOH
F.W. 40.00
Hazard Alert
Corrosive solid; skin burns are possible; large amounts of heat evolve when added to water; very dangerous to eyes; wear face and eye protection when using this substance. Wear gloves. TLV 2 mg/m3.
This item can only be shipped to schools, museums and science centers
1-800-452-1261
Sodium Hydroxide