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Reactivity Documentation

Non-Redox-Active Inorganic Compounds

mixed with

Sulfite and Thiosulfate Salts

Summary

Details

Sulfite and Thiosulfate Salts is a reactive group.

Reactivity Predictions (for each pair of reactive groups)

Non-Redox-Active Inorganic Compounds mixed with
Sulfite and Thiosulfate Salts

Hazard Predictions

In most cases, no evidence was found for a hazardous interaction between non-redox-active inorganic compounds and sulfite or thiosulfate salts. Further research of comparable examples in the literature or very small scale, carefully controlled experiments may be needed to fully assess compatibility.

Thiosulfate ions bind strongly to heavy metal cations such as silver (I) and lead (II), and if salts containing those cations come into contact with thiosulfate salts, ligand exchange reactions are likely to occur. These reactions may be mildly exothermic (Barberá, J. J., Metzger, A. and Wolf, M. 2000. Sulfites, Thiosulfates, and Dithionites. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).

Many metal ions, such as Cu2+, Ag+, Pb2+, Sb3+, and Bi3+ are reduced by sodium dithionite to neutral metals in a finely divided form. The metal products may be reactive in finely divided form (Weil, E. D., Sandler, S. R. and Gernon, M. 2006. Sulfur Compounds. Kirk-Othmer Encyclopedia of Chemical Technology. (Online)).

Thiosulfate ions can reduce Fe 3+ to Fe 2+ (Barberá, J. J., Metzger, A. and Wolf, M. 2000. Sulfites, Thiosulfates, and Dithionites. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).