5.9 Water Reactives

GHS symbol showing a flame

Characteristics

These substances often react violently with water and may ignite or generate toxic, flammable, or corrosive gases. 

Laboratory Chemicals

Solids

  • aluminum chloride (anhydrous)

  • calcium carbide 

  • magnesium

  • phosphorus pentachloride 

  • sodium 

Liquids

  • acetyl chloride 

  • chlorosulfonic acid 

  • stannic chloride 

  • thionyl chloride 

Storage Precautions for Water Reactives

  • Store in a cool, dry place. 

  • Keep away from water.

  • In case of fire, do not use water. Use a dry chemical extinguisher.