Skip to content

Antimicrobial

CHLOROUS ACID

CAS 13898-47-0 Updated
22

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

An unstable inorganic chlorine oxidizer (HClO2). Used industrially for water treatment and as a chlorine-dioxide source — not on EU cosmetic positive lists and unsuitable for skin contact at meaningful levels.

Function

ANTICORROSIVEANTIMICROBIALDEODORANTORAL CAREOXIDISING

Skin benefits

  • Strong antimicrobial oxidizer in industrial water treatment
  • Some niche deodorant use claims

Known concerns

  • Highly reactive chlorine oxidizer
  • Not on EU positive lists for finished cosmetics
  • Releases chlorine dioxide on decomposition
  • Skin/respiratory irritant

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related antimicrobials

22
COLLOIDAL SILVER
Antimicrobial
 22
MAFENIDE HCL
Antimicrobial
 22
SODIUM SILVER MERCAPTOBENZIMIDAZOLE SULFONATE
Antimicrobial
 20
CHLORAMINE T
Antimicrobial
 20
NONOXYNOL-9 IODINE
Antimicrobial
 25
PSEUDOMONAS AERUGINOSA CULTURE CONDITIONED MEDIA EXTRACT
Antimicrobial
 18
CALCIUM HYPOCHLORITE
Antimicrobial
 18
CHLOROSALICYLIC ACID
Antimicrobial

Check your shelf

Find CHLOROUS ACID in your products.

Scan any cosmetic product with LuxSense to see if it contains CHLOROUS ACID and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.