Sodium Naphthol Sulfonate

INCI: SODIUM NAPHTHOL SULFONATE

CAS Number
135-76-2 (sodium 1-naphthol-4-sulfonate) / varies by isomer
Function
Antioxidant; Intermediate (limited direct cosmetic use data)
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes No specific CIR review; not in FDA VCRP at significant frequency

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

Limited safety data specific to cosmetic use; naphthol moiety raises potential concerns regarding irritation; verify supplier specifications and purity

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Concern Level: Moderate

Frequently Asked Questions

Is Sodium Naphthol Sulfonate safe in cosmetics?

Limited safety data specific to cosmetic use; naphthol moiety raises potential concerns regarding irritation; verify supplier specifications and purity The EU classifies Sodium Naphthol Sulfonate as "permitted". Safety rating: MODERATE.

Is Sodium Naphthol Sulfonate allowed in the EU?

Sodium Naphthol Sulfonate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Sodium Naphthol Sulfonate do in cosmetics?

Sodium Naphthol Sulfonate functions as: Antioxidant; Intermediate (limited direct cosmetic use data). It is classified as a cosmetic ingredient in our database. CAS number: 135-76-2 (sodium 1-naphthol-4-sulfonate) / varies by isomer.

What is the Margin of Safety for Sodium Naphthol Sulfonate?

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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