Skip to content

Other

Barium bis[4-[(2-hydroxy-1-naphthyl)azo]-2-methylbenzenesulphonate]

CAS 5850-87-3
28

Safety score · 0–100

Caution

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

About

A barium-based synthetic azo pigment used in cosmetic colourants; barium salts are subject to heavy-metal restrictions in the EU due to cardiac and neurological toxicity risk.

This compound is Pigment Red 51 (C.I. 15580), a barium-chelate azo dye. Barium salts are regulated under EU cosmetics regulation 1223/2009 due to their potential cardiac toxicity (barium ions affect potassium channels). While not currently on the prohibited Annex II list solely for being a barium salt, such metal-chelate colourants face growing regulatory scrutiny and are restricted or banned in several jurisdictions.

Known concerns

  • Barium ion toxicity — cardiac and neurological effects
  • Heavy metal residue restrictions in EU cosmetics
  • Not permitted in oral or mucous membrane products

References

EU

EU CosIng database

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

Related others

28
1-(4’-Aminophenylazo)-2-methyl- 4-(bis-2-hydroxyethyl) aminobenzene
Other
 28
2,2'-Bioxirane (1,2:3,4-Diepoxybutane)
Other
 28
2-((2-METHYLAMINO)ETHOXY)-P-PHENYLENEDIAMINE
Other
 28
2-(2,2-DIMETHOXY)ETHOXY-P-PHENYLENEDIAMINE
Other
 28
2-(2-(2-METHOXYETHOXY)ETHOXY)-P-PHENYLENEDIAMINE
Other
 28
2-(2-OXOBUTOXY)-P-PHENYLENEDIAMINE
Other
 28
2-(2-PROPENYLOXY)-P-PHENYLENEDIAMINE
Other
 28
2-Butyryl-3-hydroxy-5-thiocyclohexan-3-yl-cyclohex-2-en-1-one
Other

Check your shelf

Find Barium bis[4-[(2-hydroxy-1-naphthyl)azo]-2-methylbenzenesulphonate] in your products.

Scan any cosmetic product with LuxSense to see if it contains Barium bis[4-[(2-hydroxy-1-naphthyl)azo]-2-methylbenzenesulphonate] 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.