Sodium Bisulfite Food Grade
sodium bisulfite is a common ionic compound made from the combination of sodium, hydrogen, sulfur and oxygen ions. It is a reducing agent used in applications similar to sulfur dioxide.
1. Chemical Analysis
Purity ( NaSO3 % )
≥ 99.0 %
64 - 67%
Chloride ( as CI )
Heavy metal ( Pb )
4.0 – 5.0
Used in food
l Sodium Bisulfite food grade is used in almost all commercial wines to prevent oxidation and preserve flavor;
l In fruit canning, sodium bisulfite is used to prevent browning (caused by oxidation) and to kill microbes.
l Sodium bisulfite food grade is also added to leafy green vegetables in salad bars and elsewhere, to preserve apparent freshness
l Sodium bisulfite is a common reducing agent in the chemical industries.
l It is usually added to large piping systems to prevent oxidative corrosion.
l In biochemical engineering applications, it is helpful to maintain anaerobic conditions within a reactor.
l In wastewater treatment, sodium bisulphite is often added following disinfection with a chlorine solution to neutralize the residual chlorine before discharging the treated effluent.