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Hazard Predictions

• Corrosive: Reaction products may be corrosive
• Generates heat: Exothermic reaction at ambient temperatures (releases heat)

The combination of weak acids and water may generate a moderate amount of heat due to heat of solution.

Phosphoric acid dissolves in water with mild evolution of heat (U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office. Available online at http://www.uscg.mil/directives/cim/16000-16999/CIM_16465_12C.pdf).

Hydrofluoric acid generates heat when it is mixed with water. Heat can cause spattering and acidic fumes (The Merck Index, Rahway (NJ), Merck and Co. Inc., 11th ed. 1989).