Pentaerythrityl Tetramercaptopropionate
INCI: PENTAERYTHRITYL TETRAMERCAPTOPROPIONATE
Regulatory Status
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Safety Data
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Expert Verdict
CRITICAL: Used at 10–16% in nail gel products where it becomes polymerized upon UV cure; uncured monomer is a potent sensitizer; must be fully cured to be safe; contraindicated for skin-contact leave-on products; strong thiol odor
Regulatory Flags
Frequently Asked Questions
Is Pentaerythrityl Tetramercaptopropionate safe in cosmetics?
CRITICAL: Used at 10–16% in nail gel products where it becomes polymerized upon UV cure; uncured monomer is a potent sensitizer; must be fully cured to be safe; contraindicated for skin-contact leave-on products; strong thiol odor The EU classifies Pentaerythrityl Tetramercaptopropionate as "restricted". Safety rating: POOR.
Is Pentaerythrityl Tetramercaptopropionate allowed in the EU?
Pentaerythrityl Tetramercaptopropionate EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.
What does Pentaerythrityl Tetramercaptopropionate do in cosmetics?
Pentaerythrityl Tetramercaptopropionate functions as: Film forming (nail gel products — thiol-ene crosslinker). It is classified as a cosmetic ingredient in our database. CAS number: 7575-23-7.
What is the Margin of Safety for Pentaerythrityl Tetramercaptopropionate?
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.
Compliance Tools
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Related Ingredients
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