Sodium Bisulphate

Sodium Bisulphate (Sodium Hydrogensulphate) Food Grade E 514 ii – NaHSO₄

EC No: 231-665-7
CAS No: 7681-38-1
EC name: sodium hydrogensulphate
IUPAC name: sodium hydrogen sulfate
Trade name: Sodium Bisulphate
Synonyms: Sodium acid sulphate; Sodium pyrosulphate; Sodium Hydrogensulphate; Sulfuric acid, monosodium salt
Physical appearance: dry, anhydrous, crystalline solid pearls, white

Sodium Hydrogensulphate is a white, crystalline and spherical shaped (beads) substance with high hygroscopic properties.
The single beads have an approximate diameter of 0,75 mm.
It is an acid salt, a so called solid acid.
Solutions of Sodium Hydrogensulphate are caustic and on metal they have a corrosive effect.


  • Cleaning industry: – cleaning agent in household (WC cleaning powder), cleaning agent for dairies and industry
  • Waste water/Water industry: – for the adjustment of the pH value (decreasing – also suitable for pool water)
  • Technical/Chem. industry: – for the dehydration of Castor oil (as solid acid)
  • Textile industry: – for bleaching and dyeing of wool as auxiliary agent / spinning of viscose (as an additive to spinning baths) / improvement of colour retention when using dicyandiamide
  • Optics: – for technical glass and polishing and grinding agent
  • Caoutchouc: – for the reprocessing of used caoutchouc
  • Leather industry: – for the bleaching and swelling of skins
  • Metal industry: – for the pickling of metals (as flux)
  • Mineral oil industry: – for extracting nitrogen compounds from hydrogencarbons
  • Treatment of litter/manure on poultry farms

The following certificates are available for this product:
Food Grade
Feed Grade

Sodium Bisulphite

Sodium Metabisulphite (Aqueous solution, Type-2) ANALYTICAL METHOD (Solution)
Appearance Light yellow liquid Visual
NaHSO3 36%-38% as NaHSO3 Titrimetric
SO2 content % 22 (m/m)
Density (25 ºC,g/ml) 1,30 – 1,37 Densimeter
Iron content max. 10 ppm Colorimetric
Heavy metals max. 5 ppm (excluding Fe,as Pb) Colorimetric


  • Antichlore in bleaching fibers and mordant in textile
  • Antiseptic in production of cellulose esters
  • Main raw material in production of sodium hydrosulfite
  • Aromatic alcohols and aldehyde
  • Antiseptic in fermentation process
  • Depilator in leather industries
  • Disinfectant in cosmetic and canned industry
  • Various applications in paper, rubber, sugar, galvanoplasty and adhesive industries


Sodium Metabisulphite

Sodium Metabisulphite (Food Quality)-E223 ANALYTICAL METHOD (Food Quality)-E223
Appearance White or pale yellow clear, crystalline with and odorof sulfur dioxide Visual
Concentration (Na2S2O5) min. % 98 (m/m) Titrimetric
SO2 content min. % 66,02 (m/m) (With Calculation)
Na2SO3 content max. % 1,5 (m/m) Titrimetric
Na2S2O3 content max. % 0,02 (m/m) Turbidimetric
Na2SO4 content max. % 2 (m/m) Turbidimetric
Iron (Fe) content max. 5 ppm Colorimetric
Heavy Metals
(Fe excluded, Pb content) max. 10 ppm Kolorimetric
Chloride (Cl) content max. % 0.02 (m/m) Titrimetric
Arsenic (As) content max. 0.5 ppm AAS
Lead (Pb) content max. 0.5 ppm AAS
Cadmium (Cd) content max. 50 ppb AAS
Selenium (Se) content max. 0.5 ppm AAS
Insolubility Gravimetric
pH (10% solution) 4-5,5 pHmeter
Mercury (Hg) content max. 0.1 ppm AAS
RAW MATERIAL CONTENT Sulfur, Sodium Carbonate, Sodium Hydroxide
PACKAGING Delivered in 25 kg polyethylene bags, resistant to moisture and physical damage or in 900 – 1000 kg polypropylenebig-bags with polyethylene liners.


  • Anthichlore in bleaching in textile industry
  • Antiseptic in production of cellulose esters
  • Main raw material in production of sodium hydrosulfite, aromatic alcohols and aldehydes
  • Preservative and disinfactant in food and baverage industries as a source of sulfur dioxide
  • Antiseptic in fermantation process
  • Color removing in paint and leather industries
  • Disinfectant in cosmetic and canned industry
  • Various applications in paper, fiber, rubber and adhesive industries