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Cosmetic ingredient (INCI)

Sodium Sulfite

Used in cosmetic products as antioxidant, hair waving or straightening and reducing. Sodium Sulfite 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 sulfite chemical structure, Na2O3S, CAS 7757-83-7
Sodium sulfite
CAS 7757-83-7Na2O3S
312 suppliers
Sodium sulfite

IUPAC name: disodium, sulfite

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

Sodium Sulfite suppliers

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Frequently asked questions

What is Sodium Sulfite used for in cosmetics?

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

Is Sodium Sulfite restricted in cosmetics in the EU?

Sodium Sulfite 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 Sulfite?

Sodium Sulfite is listed with CAS number 7757-83-7 and EC number 231-821-4.

Where can I buy Sodium Sulfite?

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