Sodium sulphite is the sodium salt of sulphurous acid.
It occurs at room temperature as a white, unstable powder, which forms sodium sulphate by reacting with oxygen. In the presence of acids, sulfuric acid originates.
Sodium sulphite is mainly used as a preservative, as well as a bleaching and oxidizing agent.
It can be contained in egg yolk and in products containing it, in beer, in bread, in caramel.
It could reduce the vitamin content of various products.
Sulphates (in which sulfur dioxide is reduced in the liver) are not considered harmful to health and are excreted in the urine.
ADI DOSE: 0.7 mg per kg of body weight.
