Propylene Glycol Butyl Ether
INCI: PROPYLENE GLYCOL BUTYL ETHER (ALSO KNOWN AS PNB; PPG-1 BUTYL ETHER IN SOME COSMETIC CONTEXTS)
Regulatory Status
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Safety Data
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Expert Verdict
⚠ Glycol ether class — some glycol ethers have reproductive toxicity concerns (though PnB specifically has low reproductive risk per OECD). ⚠ Residual propylene oxide may be present from manufacture
Frequently Asked Questions
Is Propylene Glycol Butyl Ether safe in cosmetics?
⚠ Glycol ether class — some glycol ethers have reproductive toxicity concerns (though PnB specifically has low reproductive risk per OECD). ⚠ Residual propylene oxide may be present from manufacture The EU classifies Propylene Glycol Butyl Ether as "permitted". Safety rating: MODERATE.
Is Propylene Glycol Butyl Ether allowed in the EU?
Propylene Glycol Butyl Ether EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Propylene Glycol Butyl Ether do in cosmetics?
Propylene Glycol Butyl Ether functions as: Solvent; coalescent; coupling agent (primarily industrial); limited cosmetic use as solvent. It is classified as a cosmetic ingredient in our database. CAS number: 5131-66-8 (primary); 29387-86-8 (alternate).
What is the Margin of Safety for Propylene Glycol Butyl Ether?
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.
Compliance Tools
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Related Ingredients
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