Ingredient Dictionary

ISOAMYL BUTYRATE

Isoamyl butyrate is the butanoate ester of isoamylol.

Definition

Isoamyl butyrate is the butanoate ester of isoamylol. It has a role as a metabolite. It is functionally related to an isoamylol.

Source: PubChem

US FDA substance register · UNII 505AFM77VU · registered name ISOAMYL 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

ISOAMYL BUTYRATEINCIButanoic acid, 3-methylbutyl esterSynonym

CAS No.chemical registry number: 106-27-4
EC No.EU chemical inventory number: 203-380-8
DTXSIDUS EPA chemical ID: DTXSID3042059
DTXCIDUS EPA compound ID: DTXCID1022059

IUPAC: 3-Methylbutyl butanoate
Molecular formula: C9H18O2
Molecular weight: 158.241 g/mol

Measured properties

Appearance: Liquid · Colourless liquid with a fruity odour
Boiling point: 179.00 °C. @ 760.00 mm Hg · 179 °C
Melting point: -73.2 °C
Solubility: 118 mg/L @ 25 °C (exp) · Soluble in ethanol and most fixed oils, insoluble in glycerol, propylene glycol and water
Density: 0.861 - 0.866
Melting/freezing point: -73.2 ℃
Initial boiling point and range: 179 ℃
Flash point: 53 ℃
Water solubility: 118 ㎎/ℓ(NLM)
Relative density: 0.866
n-Octanol/water partition coefficient (Kow): 3.25
Molecular weight: 158.329

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: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 65 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.

Fragrance62
Flavouring and nutrient2
No specific technical function1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

4 skin studies and 3 eye studies are on record.

Classed as low1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 7 studies

Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
Category 6.3A (Category 2)
Skin Irritation · Read Across
Classification not possible
Skin Sensitization · Screening
Classification not possible
Skin Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) Feb. 1987 according to EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion) 29.12.1992 according to
Classification not possible
Eye Irritation · Screening