Sodium metabisulphite (aka Sodium Pyrosulphite or Disodium) belong to a family of chemicals known as sulphites. It is white or yellowish-white crystalline powder used as a disinfectant, antioxidant and preservative in processed fruit products including dried fruits, juices and wine; cosmetics and pharmaceuticals such as fixing agent in radiography (a cause of darkroom asthma), dexamethasone inj and adrenaline inj. It dissolves in water to releases foul-smelling sulfur dioxide gas. It has also been used to preserve colour of some fruits, such as bananas.
Use data suggest that the general population will be exposed to sodium metabisulphite via ingestion . . .
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