Sodium bisulphite is produced through a completely inorganic process by absorption in aqueous basic solution of off gas from the sulfuric acid production plant, with a considerable advantage for the environment.
Identification of the product
Chemical Name: Sodium Bisulfite
EINECS no. 231-548-0
CAS no. 7631-90-5
Formula: NaHSO3
Molecular weight: 104,06
Properties
The Sodium Bisulphite of Marchi Industriale S.p.A. it is supplied in aqueous solution with a typical title of about 21% SO2.
Areas of application
The following uses are mentioned:
In the treatment of waste water containing chlorine
In the tanning and galvanic industry
Packaging, storage, handling
Tanks of about 13/28 tons. For handling and any other information regarding the health of users, please refer to the Safety Data Sheet.
Chemical and physical features
Title (% SO2): 21.5 +/- 1.5
Sulphates (% Na2SO4): <8%
pH (20 ° C as it is): 4 +/- 1
Appearance: clear yellow liquid
Crystallization temperature: - 5 ° C approx.
Solubility: miscible in water in all proportions
Density (20 ° C): 1.32 kg / dm3 approx.