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A powerful reducing agent used in vat and sulphur dyeing of textiles, as a bleaching agent for pulp, paper, and clays, and as an oxygen scavenger, reductant, and decolouriser in water treatment.

Specialty ChemicalsAdditivesWater Treatment ChemicalsInorganic Chemicals
Textiles & LeatherWater Treatment & Conditioning

Full specification

Molecular formula
Na2O4S2
Grades
technicalhigh-purity
Packaging
50 kg steel drum · 100 kg steel drum · 1000 kg big bag
Appearance
White to light grey crystalline powder
Synonyms
7775-14-6 · sodium hydrosulfite · sodium hydrosulphite · disodium dithionite

Compliance & regulatory

Region: EU — Chemotto S.r.l., Milano

  • REACH-aligned supply
  • CLP-labelled

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