Sodium Bisulphate

Sodium bisulphate is a solid in the form of a white powder. Sodium bisulphate is mainly used to acidify solutions. It is also used in metal treatment, as part of the pickling solution, which is used to remove the oxide layer that forms when the metal surface is heated. In swimming pools it is used to reduce the pH of the water (necessary for the effectiveness of chlorine). Approved by AAFCO as a general purpose food additive. Sodium bisulphate generates sulphuric acid in aqueous solution and was therefore historically used as a main compound in some cleaning products.

IDENTIFICATION AND PROPERTIES

Name: Sodium Bisulphate
Synonyms: Sodium bisulphate
CAS: 7681-38-1
EC: 231-665-7

• Appearance (20ºC, 101.3 kPa): Solid, in the form of white or slightly yellowish beads or powder
• Odour: Odourless
• Olfactory threshold: No data available
• pH (20ºC, 50 g/l H2O): 1
• Melting point: 179ºC
• Explosive limits: Non-explosive
• Density (20ºC): 2,44 g/cm3
• Solubility in water (25ºC): 1050 g/l
• Decomposition temperature: 460ºC
• Explosive properties: Non-explosive
• Oxidising properties: Non-combustive
• Bulk density: 1200-1500 g/l

USES

• Substance production - Industrial
• Formulation of preparations - Industrial
• Use of Cleaning Agents - Industrial / Professional / Consumer
• Metal surface treatment products including electrolytic and galvanic products - Industrial
• Water Treatment - Industrial / Professional / Consumer
• Food and feed - Industrial