Sodium Metaphosphate in cosmetics: what it is and what it does

What does Sodium Metaphosphate do in a product?

In a cosmetic product, Sodium Metaphosphate keeps the product's acidity steady, binds metals in water so the product stays stable, and cares for teeth and mouth. The EU’s CosIng database lists these jobs for it: buffering, chelating and oral care.

What other names and numbers does Sodium Metaphosphate have?

CAS number

10361-03-2, 50813-16-6

EC number

233-782-9, 256-779-4

CosIng reference

79773

Which products contain Sodium Metaphosphate?

Open Beauty Facts finds Sodium Metaphosphate in the ingredient lists of 8 of the 22,021 products it has a list for, most often body care and body creams.

• Body care1
• Body creams1

Products with it, by country of sale: France 5 · Hong Kong 2 · Japan 1 · Belgium 1.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Sodium Metaphosphate turns up, not how much of the market it is.

Sources

The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.

1. European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
2. Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL

Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check