Good Cosmetic Ingredient NOAEL Data

PPG-33 Butyl Ether

INCI: PPG-33 BUTYL ETHER

CAS Number
9003-13-8
Function
Hair conditioning, Skin conditioning
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted; CIR reviewed PPGs and alkyl PPG ethers โ€” safe when formulated to be non-irritating

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

4 study endpoints found for PPG-33 Butyl Ether. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 1000 other oral rat oral REACH
NOEL 100 mg/kg bw/day oral rat oral REACH
NOAEL 1000 other oral rat oral REACH
NOAEL 1000 other oral rat oral REACH

Expert Verdict

No ethoxylation (PPG-only, no PEG segment) = no 1,4-dioxane concern; propylene oxide residuals possible but expected to be minimal

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Concern Level: Low

Regulatory Flags

ifra_fragrance

Frequently Asked Questions

Is PPG-33 Butyl Ether safe in cosmetics?

No ethoxylation (PPG-only, no PEG segment) = no 1,4-dioxane concern; propylene oxide residuals possible but expected to be minimal The EU classifies PPG-33 Butyl Ether as "permitted". Safety rating: GOOD. 4 toxicological study endpoint(s) are available in our database.

Is PPG-33 Butyl Ether allowed in the EU?

PPG-33 Butyl Ether EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does PPG-33 Butyl Ether do in cosmetics?

PPG-33 Butyl Ether functions as: Hair conditioning, Skin conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 9003-13-8.

What is the Margin of Safety for PPG-33 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.

What is the NOAEL for PPG-33 Butyl Ether?

The NOAEL (No Observed Adverse Effect Level) for PPG-33 Butyl Ether is 1000 other based on a oral study via oral route in rat. A total of 4 study endpoints are available. Source: REACH.

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