Ingredient Dictionary

AMYL ACETATE

Pentyl acetate is an acetate ester of pentanol.

Definition

Pentyl acetate is an acetate ester of pentanol. It has a role as a metabolite. It is functionally related to a pentan-1-ol.

Source: PubChem

US FDA substance register · UNII 92Q24NH7AS · registered name AMYL ACETATE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Base that dissolves other ingredientsSOLVENTListed as a fragrance-composition material (not a claim that it adds scent)FRAGRANCE

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

Reviewed by CIR: Amyl Acetate and Isoamyl Acetate

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Final Report on the Safety Assessment of Amyl Acetate and Isoamyl Acetate

Source: US Cosmetic Ingredient Review (CIR)

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

Official labels & definitions

JCIA labelling name 酢酸アミル: 本品は、酢酸（＊）とアミルアルコールのエステルであり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

AMYL ACETATEINCI아밀아세테이트Korean label name (MFDS standard)Acetic acid, pentyl esterSynonym酢酸アミルJapanese labelling name

CAS No.chemical registry number: 628-63-7
EC No.EU chemical inventory number: 211-047-3
DTXSIDUS EPA chemical ID: DTXSID1027263
DTXCIDUS EPA compound ID: DTXCID107263

IUPAC: Pentyl acetate
Molecular formula: C7H14O2
Molecular weight: 130.187 g/mol

Measured properties

Appearance: N-amyl acetate appears as a mixture of isomers. A clear colorless liquid with a banana-like odor. Flash point varies from 65 °F to 95 °F. Less dense (at 7.2 lb / gal) than water and slightly soluble in water. Hence floats on water. Vapors heavier than air. · Liquid
Odour: Persistent banana-like odor
Boiling point: 295 °F at 760 mmHg (USCG, 1999) · 149.2 °C
Melting point: less than -148 °F (USCG, 1999) · -70.8 °C
Solubility: 0.2 % (NIOSH, 2024) · Miscible with ethanol, ethyl ether, soluble in carbon tetrachloride
Density: 0.876 at 68 °F (USCG, 1999) - Less dense than water, will float · 0.8756 at 20 °C
Stability: Stability during transport: stable
Viscosity: 1.58 cP at 11 °C · 1.58 (11 ℃)
Colour: colourless
Odour threshold: 0.08 ppm
Melting/freezing point: -71 ℃
Initial boiling point and range: 149 ℃
Flash point: 25 ℃(C.C.)
Evaporation rate: 0.42
Upper/lower flammability or explosive limits: 1.1 / 7.5 %
Vapour pressure: 3.5 ㎜Hg (25℃)
Water solubility: 0.17 g/100㎖ (20℃)
Vapour density: 4.5
Relative density: 0.88
n-Octanol/water partition coefficient (Kow): 2.18
Auto-ignition temperature: 360 ℃
Molecular weight: 130.2

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 102 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.

Fragrance50
Solubility enhancer31
Solvent14
Processing aids not otherwise specified2
Deodorizer2
Intermediate1
Adsorbent1
Flavouring and nutrient1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 2 eye studies are on record.

Classed as moderate1

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 5 studies

Category 6.3B (Category 3)
Skin Irritation · Read Across
Category 2
Skin Irritation · Screening
Classification not possible
Skin Sensitization · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Category 2B
Eye Irritation · Screening