GALACTARIC ACID

Chelating Agent

65

Moderate

CAS Number: 526-99-8

About GALACTARIC ACID

A sugar-derived dicarboxylic acid (galacturonic acid in cyclic form) used as a chelating agent in cosmetic formulations. Classified with GHS hazard statements for skin and eye irritation, requiring careful pH control in formulations.

Detailed Analysis

Galactaric acid (2,3,4,5-tetrahydroxyhexanedioic acid), also known as mucic acid, is a carbohydrate-derived dicarboxylic acid formed by oxidation of galactose. Functions as a chelating agent. EU CLP classification includes H315 (skin irritation), H319 (serious eye irritation), and H335 (respiratory irritation), with Signal Word: Warning. In cosmetic use, these hazards manifest only at low pH; well-neutralized formulations are significantly less irritating. Not specifically restricted in EU cosmetic regulation.

What It Does

CHELATING

Skin Benefits

  • ✓ Chelating agent — binds metal ions to stabilize formulations
  • ✓ Antioxidant properties from sugar acid structure

Known Concerns

  • ⚠ H315: Causes skin irritation
  • ⚠ H319: Causes serious eye irritation
  • ⚠ H335: May cause respiratory irritation at high concentrations
  • ⚠ Requires pH control in formulations to minimize irritation

Safety Score

65

Moderate

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.