Product Short Description: SODIUM BISULPHITE LR Product Description: Sodum bisulphite appears as white crystals or crystalline powder. Slight sulphurous odor. Specific gravity 1.48. Chemically, sodium bisulfite is a combination of sodium, hydrogen, sulfur and oxygen. It is also called sodium hydrogen sulfite, and is classed as a sulfite, or sulfur-based chemical. Its natural form is a white crystalline powder, but turns yellow in solution. Chemically, sodium bisulfite is a combination of sodium, hydrogen, sulfur and oxygen. It is also called sodium hydrogen sulfite, and is classed as a sulfite, or sulfur-based chemical. Its natural form is a white crystalline powder, but turns yellow in solution.Sodum bisulphite appears as white crystals or crystalline powder. Slight sulphurous odor. Specific gravity 1.48. Chemically, sodium bisulfite is a combination of sodium, hydrogen, sulfur and oxygen. It is also called sodium hydrogen sulfite, and is classed as a sulfite, or sulfur-based chemical. Its natural form is a white crystalline powder, but turns yellow in solution.