Isopropyl 3-Methylthiocrotonate

INCI: ISOPROPYL 3-METHYLTHIOCROTONATE

CAS Number
34365-80-3
Function
Fragrance ingredient
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no CFR prohibition; IFRA-listed fragrance material

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Very limited publicly available toxicological data; TTC-dependent safety clearance; sulfur-containing compound with stability and degradation considerations requiring monitoring.

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Concern Level: High

Regulatory Flags

fragrance-component

Frequently Asked Questions

Is Isopropyl 3-Methylthiocrotonate safe in cosmetics?

Very limited publicly available toxicological data; TTC-dependent safety clearance; sulfur-containing compound with stability and degradation considerations requiring monitoring. The EU classifies Isopropyl 3-Methylthiocrotonate as "prohibited". Safety rating: GOOD.

Is Isopropyl 3-Methylthiocrotonate allowed in the EU?

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

What does Isopropyl 3-Methylthiocrotonate do in cosmetics?

Isopropyl 3-Methylthiocrotonate functions as: Fragrance ingredient. It is classified as a cosmetic ingredient in our database. CAS number: 34365-80-3.

What is the Margin of Safety for Isopropyl 3-Methylthiocrotonate?

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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