TEA-Phenylbenzimidazole Sulfonate

INCI: TEA-PHENYLBENZIMIDAZOLE SULFONATE

CAS Number
Related to Ensulizole (27503-81-7 for the acid form); TEA salt is a defined salt form
Function
UV absorber, UV filter (UV-B, 280–320 nm)
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status restricted
EU Max Conc. 8%
🇺🇸 US Status permitted
US Notes Ensulizole is an FDA-approved OTC sunscreen active (Category I monograph) — up to 4%

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Photostability concerns when used alone (better in combination with other UV filters); nitrosamine risk from TEA; must comply with both Annex VI and III restrictions

⚠️
Concern Level: Low

Frequently Asked Questions

Is TEA-Phenylbenzimidazole Sulfonate safe in cosmetics?

Photostability concerns when used alone (better in combination with other UV filters); nitrosamine risk from TEA; must comply with both Annex VI and III restrictions The EU classifies TEA-Phenylbenzimidazole Sulfonate as "restricted". Safety rating: GOOD.

Is TEA-Phenylbenzimidazole Sulfonate allowed in the EU?

TEA-Phenylbenzimidazole Sulfonate EU regulatory status: restricted. Maximum allowed concentration: 8%. This is based on EU Regulation 1223/2009 and its amendments.

What does TEA-Phenylbenzimidazole Sulfonate do in cosmetics?

TEA-Phenylbenzimidazole Sulfonate functions as: UV absorber, UV filter (UV-B, 280–320 nm). It is classified as a cosmetic ingredient in our database. CAS number: Related to Ensulizole (27503-81-7 for the acid form); TEA salt is a defined salt form.

What is the Margin of Safety for TEA-Phenylbenzimidazole Sulfonate?

adequate 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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