Skip to content

pH Adjuster

PHOSPHORIC ACID

CAS 7664-38-2 Updated
65

Safety score · 0–100

Fine

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

About

A strong inorganic acid used in trace amounts to fine-tune product pH. Safe in finished cosmetics where it is fully neutralised, but corrosive if handled neat.

Function

BUFFERING

Skin benefits

  • Effective pH adjuster
  • Used in trace amounts
  • Food-grade material
  • Stable inorganic acid

Known concerns

  • Strongly corrosive in concentrated form
  • Can irritate skin and eyes if not buffered
  • Must be neutralised in formula

References

EU

EU CosIng database

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

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

View →

Related ph adjusters

65
GLYCINE HCL
pH Adjuster
 65
SODIUM ALUMINUM LACTATE
pH Adjuster
 65
SODIUM BUTOXYETHOXY ACETATE
pH Adjuster
 68
AMINOMETHYL PROPANOL
pH Adjuster
 68
AMMONIUM GLYCOLATE
pH Adjuster
 68
ITACONIC ACID
pH Adjuster
 68
MALONIC ACID
pH Adjuster
 62
METHYL LACTIC ACID
pH Adjuster

Check your shelf

Find PHOSPHORIC ACID in your products.

Scan any cosmetic product with LuxSense to see if it contains PHOSPHORIC 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.