Aw called acid sodium type, sodium sulfite deoxidization, molecular formula, NaHSO3 104.06. White or yellow crystalline powder. So2 or thick smell, relative density 1.48. Soluble in water, water (1%) of the pH value of 4.0 to 5.5, soluble in ethanol and acetone. In the air oxidation and thermal decomposition is extremely strong reducing.
Used to eliminate containing polyvinyl alcohol shrinkage of formaldehyde of water-soluble adhesive formaldehyde smell. Eliminate alkaline dextrin adhesives, for dextrin bleach. Also available for preservative, bleach, etc. Stored in a cool and dry area, moistureproof.
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