365bet娱乐

Hazard Predictions

• Flammable: Reaction products may be flammable
• Generates gas: Reaction liberates gaseous products and may cause pressurization
• Generates heat: Exothermic reaction at ambient temperatures (releases heat)
• Toxic: Reaction products may be toxic

BARIUM reacts with moisture in the air. It rapidly reacts with water to generate gaseous hydrogen. The heat of reaction is sufficient that the evolved hydrogen may ignite (Lab. Govt. Chemist 1965). The element is pyrophoric in powdered form. The interaction of barium with water is more violent than the interaction of calcium or strontium with water, but less violent than sodium (Bretherick, L. 1996. Bretherick's Handbook of Reactive Chemical Hazards. Vol. 1, p 88-89. Fifth Ed. Urben, P.G., Ed. Butterworth-Heinemann, Boston, MA).

ZINC DUST can evolve gaseous hydrogen in contact with water or damp air. The heat of the reaction may be sufficient to ignite the hydrogen produced (Hazardous Chemical Reactions, NFPA 491, Boston, National Fire Protection Association, 1966, p. 171).

Potential Gas Byproducts

• Hydrogen (H2)