2S2O5. It is also known as sodium pyrosulfite and sodium disulfite. Na2S2O5+2O52-). In its standard state, sodium metabisulfite exists as a white or yellowish-white powder.
is made up of two sodium ions and one metabisulfite ion. The structure of a Na2S2O5 molecule is illustrated below.
Add a certain amount of soda ash to the sodium bisulfite solution to generate a suspension of sodium sulfite. Passed into the sulfur dioxide, generating sodium metabisulfite crystals, centrifuged and dried to produce. Or use sodium carbonate solution to absorb sulfur dioxide gas to generate sodium bisulfite solution, when the end of the reaction, from the sodium bisulfite saturated liquid precipitation, dehydration by centrifugation, drying produced.
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