An inorganic potassium salt of chloric acid, used as an oxidising agent and regulated in Annex III.
What it is
Potassium chlorate is KClO3, the potassium salt of chloric acid, a white crystalline solid and strong oxidising agent. CosIng lists it as an oxidising agent. In the EU it is covered by an entry in Annex III (substances subject to restrictions).
Where it is used
Appears on the ingredient lists of a small number of products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
See the EU regulation section for the applicable limits, which differ between toothpaste and other products.
Functions
- Oxidising
- Changing the chemical nature of another ingredient by adding oxygen (or removing hydrogen).
EU regulation
EU · Annex III, entry 6Chlorates of alkali metals
- Product type
- (a) Toothpaste (b) Other products
- Maximum concentration
- (a) 5% (b) 3%
- As of
- 3 November 2026 · (EC) 2009/1223