#sodium_arsenite

Sodium arsenite

Chemical compound

Sodium arsenite usually refers to the inorganic compound with the formula NaAsO2. Also called sodium meta-arsenite, it is an inorganic polymer consisting of the infinite chains [AsO2]n−n associated with sodium cations, Na+. The polymer backbone has the connectivity -O-As(O−)-.backbone. Sodium ortho-arsenite is Na3AsO3. Both compounds are colourless solids. A mixture of sodium meta-arsenite and sodium ortho-arsenite is produced by treating arsenic trioxide with sodium carbonate or sodium hydroxide. Sodium arsenite is amorphous, typically being obtained as a powder or as a glassy mass.

Tue 2nd

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