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Hazard Predictions

• Corrosive: Reaction products may be corrosive
• Explosive: Reaction products may be explosive or sensitive to shock or friction
• 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)
• Intense or explosive reaction: Reaction may be particularly intense, violent, or explosive
• Toxic: Reaction products may be toxic

Exposure of sodium to H2S can cause a fire. In the presence of moisture, a rapid reaction occurs, forming corrosive sodium sulfide and possibly flammable hydrogen gas (Leleu, J., 1975, Les Reactions Chimique Dangereuse, Cahiers de Notes Documentaires, (79), p. 268, 270; Eggeman, T. and Updated by Staff 2007. Sodium and Sodium Alloys. Kirk-Othmer Encyclopedia of Chemical Technology. (Online)).

CS2 forms an explosive mixture with sodium or Na-K alloy. Mixtures of CS2 and any group I metals are shock-sensitive (Leleu, J., 1975, Les Reactions Chimique Dangereuse, Cahiers de Notes Documentaires, (79), p. 267; Staudinger, H.Z. 1922. Agnew. Chem. 35:659).

CS2 reacts violently with sodium to form corrosive sodium sulfide (Eggeman, T. and Updated by Staff 2007. Sodium and Sodium Alloys. Kirk-Othmer Encyclopedia of Chemical Technology. (Online)).

Some heavy metal sulfides are reduced by metallic sodium, forming corrosive sodium sulfide and releasing possibly toxic heavy metals (Eggeman, T. and Updated by Staff 2007. Sodium and Sodium Alloys. Kirk-Othmer Encyclopedia of Chemical Technology. (Online)).

Lithium violently reduces iron (II) sulfide to iron metal (Dickinson, F. 1967. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, Supplement 2, p. 81-82. Longmans, Green and Co Ltd.).

Potential Gas Byproducts

• Hydrogen (H2)