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Cosmetic ingredient (INCI)

Sodium Bisulfite

Used in cosmetic products as antioxidant, hair waving or straightening, preservative and reducing. Sodium Bisulfite is an inorganic salt.

Listed in several EU annexes
  • Allowed with restrictions, Annex III/99
  • Allowed preservative, Annex V/9

Annex III/99: (a) 0.67% (as free SO2) / (b) 6.7% (as free SO2) / (c) 0.45% (as free SO2) / (d) 0.40% (as free SO2) | Annex V/9: 0.2% (as free SO2)

The chemical behind this ingredient

Structure, properties, safety data and price information live on the chemical page.

Sodium bisulfite chemical structure, HNaO3S, CAS 7631-90-5
Sodium bisulfite
CAS 7631-90-5HNaO3S
279 suppliers
Sodium bisulfite

IUPAC name: sodium hydrogen sulfite

  • 2D structure and identifiers
  • Measured and computed properties
  • GHS safety summary
  • Suppliers, prices and trade data

Sodium Bisulfite suppliers

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Frequently asked questions

What is Sodium Bisulfite used for in cosmetics?

Sodium Bisulfite is used in cosmetic products as antioxidant, hair waving or straightening, preservative and reducing. Sodium Bisulfite is an inorganic salt.

Is Sodium Bisulfite restricted in cosmetics in the EU?

Sodium Bisulfite is listed in the annexes of EU Cosmetics Regulation (EC) No 1223/2009: Annex III/99 (allowed with restrictions), Annex V/9 (allowed preservative). Annex III/99: (a) 0.67% (as free SO2) / (b) 6.7% (as free SO2) / (c) 0.45% (as free SO2) / (d) 0.40% (as free SO2) | Annex V/9: 0.2% (as free SO2) Always check the full annex entry for the conditions of use.

What is the CAS number of Sodium Bisulfite?

Sodium Bisulfite is listed with CAS number 7631-90-5 and EC number 231-548-0.

Where can I buy Sodium Bisulfite?

8 suppliers list Sodium bisulfite on CompoundList. Compare them below or post a buy request with your grade and quantity.