Ingredient Dictionary

ISOBUTYL BUTYRATE

Isobutyl butyrate is a butyrate ester resulting from the formal condensation of butanoic acid with isobutanol.

Definition

Isobutyl butyrate is a butyrate ester resulting from the formal condensation of butanoic acid with isobutanol. It is used as a food flavour ingredient for apple, banana, peach and pinapple flavours in ice cream and confectionery. It has a role as a metabolite and a flavouring agent. It is functionally related to an isobutanol.

Source: PubChem

US FDA substance register · UNII 827NDQ0P0W · registered name ISOBUTYL BUTYRATE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Gives the product a scentPERFUMING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

More data — names, identifiers, properties, test records, literature

Names & identifiers

ISOBUTYL BUTYRATEINCIButanoic acid, 2-methylpropyl esterSynonym

CAS No.chemical registry number: 539-90-2
EC No.EU chemical inventory number: 208-729-8
DTXSIDUS EPA chemical ID: DTXSID8047557
DTXCIDUS EPA compound ID: DTXCID6027557

IUPAC: 2-Methylpropyl butanoate
Molecular formula: C8H16O2
Molecular weight: 144.214 g/mol

Measured properties

Appearance: liquid
Initial boiling point and range: 156.9 ℃
Flash point: 50 ℃
Vapour density: 5.0
Relative density: 0.866
n-Octanol/water partition coefficient (Kow): 2.76
Molecular weight: 144.24

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 5 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Fragrance3
Flavouring and nutrient2

Source: US EPA CompTox dashboard