Sodium Bisulfite introductions:
|Testing Programme||National standard|
|Main content (calculated as SO2 ), %||64.0-67.0|
|Water insoluble matter, %||≤0.03|
|Chloride (in Cl),%||≤0.05|
|Iron Content (in Fe),%||≤0.004|
|Arsenic Content (in As),%||≤0.0002|
|Heavy Metal Content (in Pb),%||≤0.001|
|PH Value (50g/L solution)||4.0-5.0|
Molecular Formula: NaHSO3
2.Sodium Bisulfite Application:
|Used in food||1.Sodium Bisulfite food grade is used in almost all commercial|
wines to prevent oxidation and preserve flavor;
|2.In fruit canning, sodium bisulfite is used to prevent browning|
(caused by oxidation) and to kill microbes.
|3. Sodium bisulfite food grade is also added to leafy green vegetables|
in salad bars and elsewhere, to preserve apparent freshness
|Industrial uses||1.Sodium bisulfite is a common reducing agent in the chemical industries.|
|2.It is usually added to large piping systems to prevent oxidative corrosion.|
|3.In biochemical engineering applications, it is helpful to maintain |
anaerobic conditions within a reactor.
|4.In wastewater treatment, sodium bisulphite is often added|
following disinfection with a chlorine solution to neutralize
the residual chlorine before discharging the treated effluent.