3-Methyl-2-butenal

Synonyms

2-Butenal, 3-methyl-; 3,3-Dimethylacrolein; 3-Methylcrotonaldehyde; beta,beta-Dimethylacrolein; beta,beta-Dimethylacrylic aldehyde; beta-Methylcrotonaldehyde; Crotonaldehyde, 3-methyl-; Prenal; Senecialdehyde; Senecioaldehyde; [ChemIDplus] 3-Methylbuten-2-al-1; [OECD SIDS: IUCLID Data Set] 3-Methylbut-2-enal; [ECHA REACH Registrations]

Category

Aldehydes

Description

Colorless to yellow liquid with a pungent odor; [ICSC] Colorless liquid; [Alfa Aesar MSDS]

Sources/Uses

Used as a flavoring agent; [FDA] Used to make citral and other chemicals and for the reconstitution of essential oils and other natural products; [OECD SIDS: IUCLID Data Set]

Comments

A mucous membrane irritant; May have narcotic effects at high concentration; [Merck Index] Corrosive to skin and eyes; A respiratory tract irritant; Inhalation of high concentrations can cause lowering of consciousness; May cause skin sensitization; Chronic exposure may cause tissue lesions in the respiratory tract; Can be absorbed through skin; [ICSC] Safe when used as a flavoring agent in food; [JECFA] Causes burns; May cause skin sensitization; Harmful by ingestion and inhalation; [OECD SIDS: IUCLID Data Set] An irritant that may cause serious eye injury; May cause skin sensitization; Harmful by ingestion and inhalation; [Alfa Aesar MSDS]

Biomedical References

5.6 mm Hg

LC50 (rat) = 3,700 mg/m3/4hr

Yes

Skin burns

Diseases

Occupational diseases associated with exposure to this agent:

• Contact dermatitis, allergic