Sodium Sulfanilate

INCI: SODIUM SULFANILATE

CAS Number
515-74-2 (anhydrous); 6106-22-5 (dihydrate)
Function
Antioxidant; hair dyeing agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted in cosmetics as an antioxidant; coal-tar hair dye exemption rules may apply for dyeing use

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
moderate
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Aromatic amine derivative (4-aminobenzenesulfonic acid salt); potential for sensitization; must comply with EU aromatic amine purity limits; not recommended for leave-on products at high concentrations

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Sodium Sulfanilate safe in cosmetics?

Aromatic amine derivative (4-aminobenzenesulfonic acid salt); potential for sensitization; must comply with EU aromatic amine purity limits; not recommended for leave-on products at high concentrations The EU classifies Sodium Sulfanilate as "restricted". Safety rating: MODERATE.

Is Sodium Sulfanilate allowed in the EU?

Sodium Sulfanilate EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Sodium Sulfanilate do in cosmetics?

Sodium Sulfanilate functions as: Antioxidant; hair dyeing agent. It is classified as a cosmetic ingredient in our database. CAS number: 515-74-2 (anhydrous); 6106-22-5 (dihydrate).

What is the Margin of Safety for Sodium Sulfanilate?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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