Description
Sodium metabisulphite or sodium pyrosulphite
SODIUM METABISULFITE
Art.No : S-011
Formula :
Na2S2O5
Conc (% w/w) : 1.0% pet
Molality (% w/w) : -
CAS : 7681-57-4
Series :
Uses
It is used as a food additive, mainly as a preservative and is sometimes identified as E223. As an additive, it may cause allergic reactions, particularly skin irritation e.g. excema; gastric irritation and asthma. It is not recommended for consumption by children. It is present in many dilutable squashes. It is commonly used in homebrewing preparations to sanitize equipment. It is used as a cleaning agent for potable water reverse osmosis membranes in desalination systems. It is also used to remove chloramine from drinking water after treatment. In the brand Stump-Out, it is used in almost a pure form (98%) to cause degradation of lignin, creating pores for fuel adsorption, and consequently, ignition.
