Ingredient Dictionary

BUTYL PROPIONATE

Butyl propionate is a propanoate ester of butan-1-ol.

Definition

Butyl propionate is a propanoate ester of butan-1-ol. It has a role as an insect attractant, a flavouring agent, a plant metabolite and a human metabolite. It is functionally related to a butan-1-ol.

Source: PubChem

US FDA substance register · UNII 2NXC4AK99E · registered name BUTYL PROPIONATE · 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

BUTYL PROPIONATEINCIPropanoic acid, butyl esterSynonym

CAS No.chemical registry number: 590-01-2
EC No.EU chemical inventory number: 209-669-5
DTXSIDUS EPA chemical ID: DTXSID5027223
DTXCIDUS EPA compound ID: DTXCID907223

IUPAC: Butyl propanoate
Molecular formula: C7H14O2
Molecular weight: 130.187 g/mol

Measured properties

Appearance: N-butyl proprionate appears as a water-white liquid with an apple-like odor. Less dense than water. Flash point 90 °F. May irritate skin and eyes. Used to make perfumes and flavorings. · Liquid
Boiling point: 296.2 °F at 760 mmHg (USCG, 1999) · 145.00 °C. @ 756.00 mm Hg
Melting point: -128 °F (USCG, 1999) · -89 °C
Solubility: 1.5 mg/mL at 20 °C · Solubility in water: poor
Density: 0.8754 (USCG, 1999) - Less dense than water, will float · Relative density (water = 1): 0.9
Colour: colourless
Melting/freezing point: -90 ℃
Initial boiling point and range: 145 ℃
Flash point: 38 ℃
Vapour pressure: 4.42 ㎜Hg (@ 25 °C)
Water solubility: 921.4 ㎎/ℓ
n-Octanol/water partition coefficient (Kow): 2.34
Auto-ignition temperature: 425 ℃
Molecular weight: 130.21

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 10 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 nutrient3
Solvent3
Intermediate1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

6 skin studies and 4 eye studies are on record.

Classed as low4

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 10 studies

Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to
Classification not possible
Skin Irritation · Screening
Classification not possible
Skin Sensitization · Screening
Category 6.3B (Category 3)
Skin Irritation · Read Across
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) equivalent or similar to
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) according to
Classification not possible
Eye Irritation · Screening