Poor Cosmetic Ingredient NOAEL Data

3-Methoxybutanol

INCI: 3-METHOXYBUTANOL

CAS Number
2517-43-3
Function
Solvent
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Not specifically restricted by FDA for cosmetics, but classified as a reproductive toxicant internationally

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

8 study endpoints found for 3-Methoxybutanol. 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 100 mg/kg bw/day 2400 code:1952 other REACH
NOAEL >=6 mg/L air 1995 rat inhalation REACH
NOAEL 5 other oral rat oral REACH
NOAEL >=6 mg/L air inhalation - inhalation REACH
NOEL 10 other oral rat oral REACH
NOEL 3 other oral dog oral REACH
NOAEL 20 other oral rat oral REACH
NOEL 1000 mg/kg bw/day oral rat oral REACH

Expert Verdict

Prohibited in EU cosmetics as a reproductive toxicant; glycol ether with developmental toxicity concerns. Not approved for fragrance use by IFRA. Restricted in US; risk assessment advised for all markets due to CMR classification.

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Concern Level: High

Frequently Asked Questions

Is 3-Methoxybutanol safe in cosmetics?

Prohibited in EU cosmetics as a reproductive toxicant; glycol ether with developmental toxicity concerns. Not approved for fragrance use by IFRA. Restricted in US; risk assessment advised for all markets due to CMR classification. The EU classifies 3-Methoxybutanol as "prohibited". Safety rating: POOR. 8 toxicological study endpoint(s) are available in our database.

Is 3-Methoxybutanol allowed in the EU?

3-Methoxybutanol EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does 3-Methoxybutanol do in cosmetics?

3-Methoxybutanol functions as: Solvent. It is classified as a cosmetic ingredient in our database. CAS number: 2517-43-3.

What is the Margin of Safety for 3-Methoxybutanol?

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 3-Methoxybutanol?

The NOAEL (No Observed Adverse Effect Level) for 3-Methoxybutanol is 100 mg/kg bw/day based on a other study via 2400 route in code:1952. A total of 8 study endpoints are available. Source: REACH.

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