2,3-Butanediol

INCI: 2,3-BUTANEDIOL

CAS Number
513-85-9 (meso); 5341-95-7 (D-form); 24347-58-8 (L-form)
Function
Solvent, humectant, skin conditioning agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Not specifically restricted; however, CIR (2024) found insufficient data to determine safety

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

CIR classified as "insufficient data" alongside 1,4-butanediol and 1,5-pentanediol; no frequency-of-use or concentration-of-use data reported to FDA VCRP

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Concern Level: Moderate

Regulatory Flags

ifra_fragrance

Frequently Asked Questions

Is 2,3-Butanediol safe in cosmetics?

CIR classified as "insufficient data" alongside 1,4-butanediol and 1,5-pentanediol; no frequency-of-use or concentration-of-use data reported to FDA VCRP The EU classifies 2,3-Butanediol as "restricted". Safety rating: MODERATE.

Is 2,3-Butanediol allowed in the EU?

2,3-Butanediol EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does 2,3-Butanediol do in cosmetics?

2,3-Butanediol functions as: Solvent, humectant, skin conditioning agent. It is classified as a cosmetic ingredient in our database. CAS number: 513-85-9 (meso); 5341-95-7 (D-form); 24347-58-8 (L-form).

What is the Margin of Safety for 2,3-Butanediol?

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.

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