2-Methyl-2-Butenol

2-Methyl-2-Butenol (CAS 4675-87-0) is a cosmetic cosmetic ingredient functioning as Flavouring and nutrient; Fragrance. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and food safety data.

View industrial chemical safety profile for CAS 4675-87-0 →

Auto-generated CPSR Part A draft with source citations
Function
Flavouring and nutrient; Fragrance
Safety Rating
MODERATE

Chemistry & Identifiers

Formula
C5H10O
MW
86.13 g/mol
PubChem CID
6433417
IUPAC Name
(E)-2-methylbut-2-en-1-ol
InChIKey
NEJDKFPXHQRVMV-HWKANZROSA-N

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes Not specifically restricted; general cosmetic safety provisions apply

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

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for 2-Methyl-2-Butenol.

Calculate MoS for your specific formulation with the MoS Calculator.

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Flavouring and nutrient Fragrance
Regulatory List Membership (1)
FDA Substances Added to Food (EAFUS)

Expert Verdict

Expert safety assessment and concern-level summary for 2-Methyl-2-Butenol.

Regulatory Flags

essential-oil fragrance-component fda_food_additive

Chemical Function

Fragrance Flavouring and nutrient

Regulatory Lists

Europe food_additive; Substances Added to Food (formerly EAFUS) (2/2019) air; detected; emissions; Europe; Toys and children's products

Australian Status

AICIS status: listed

Cross-Vertical Safety Context

Same-CAS public records found in food safety data.

SOURCE EFSA / FDA GRAS food_additives

Food Safety Data

Same-CAS food additive or FDA GRAS records from the core public database.

Food Name
2-METHYLBUT-2-EN-1-OL
ADI
No safety concern at current levels of intake when used as a flavouring agent mg/kg bw
Food Category
flavoring
View full food safety profile →

Frequently Asked Questions

Is 2-Methyl-2-Butenol safe in cosmetics?

2-Methyl-2-Butenol has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.

Is 2-Methyl-2-Butenol allowed in the EU?

2-Methyl-2-Butenol EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does 2-Methyl-2-Butenol do in cosmetics?

2-Methyl-2-Butenol functions as: Flavouring and nutrient; Fragrance. It is classified as a cosmetic ingredient in our database. CAS number: 4675-87-0.

Is 2-Methyl-2-Butenol used outside cosmetics?

2-Methyl-2-Butenol also appears in industrial chemical safety and food safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

Is 2-Methyl-2-Butenol in Your Products?

Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free →

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for 2-Methyl-2-Butenol in your formulation.