ACS reagent, mixture of NaHSO3 and Na2S2O5. Reducing agent, convenient source of sulfur dioxide. Synonyms: Sodium hydrogen sulfite CAS Number: 7631-90-5 Molecular Weight: 104.06 Molecular Formula: NaHSO3 Purity (Titration by SO2): 58.5% Appearance: White crystalline powder Infrared Spectrum: Conforms to Structure Insoluble Material (10%, H2O): 0.005% Heavy Metal (as Pb): 0.001% Chloride (Cl-): 0.02% Iron (Fe): 0.002% Solubility: Soluble in 3.5 parts water Warning: Corrosive! Irritant! Storage and Stability: May be stored at RT. Stable for 6 months after receipt. Hygroscopic.
Molecular Weight:
104.06
CAS Number:
[7631-90-5]
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