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Ethyl isovalerate

CAS No. 108-64-5 | PubChem CID 7945
Section 1. Identification
Chemical NameEthyl isovalerate CAS No.108-64-5
Synonymsethyl3-methylbutyrate; ethylisovalerate Chinese Name异戊酸乙酯
Molecular FormulaC7H14O2 Molecular Weight130.21
UN No.3272 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word WARNING
Pictograms GHS02 · Flammable GHS07 · Irritant
Hazard Statements H226H315
Precautionary Statements P210P233P240P241P242P243P264P280P302+P352P303+P361+P353P321P332+P317P362+P364P370+P378P403+P235P501

Section 2. Hazards Identification

H226 (99.9%): Flammable liquid and vapor [Warning Flammable liquids]

H315 (97.2%): Causes skin irritation [Warning Skin corrosion/irritation]

P210, P233, P240, P241, P242, P243, P264, P280, P302+P352, P303+P361+P353, P321, P332+P317, P362+P364, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 1810 reports by companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Section 4. First-Aid Measures

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

Refer to the "General First Aid" section. Specific First Aid: Wash skin with soap and water. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. (ERG, 2024)

Section 5. Fire-Fighting Measures

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

CAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient. CAUTION: For mixtures containing alcohol or polar solvent, alcohol-resistant foam may be more effective.

SMALL FIRE: Dry chemical, CO2, water spray or regular foam. If regular foam is ineffective or unavailable, use alcohol-resistant foam.

LARGE FIRE: Water spray, fog or regular foam. If regular foam is ineffective or unavailable, use alcohol-resistant foam. Avoid aiming straight or solid streams directly onto the product. If it can be done safely, move undamaged containers away from the area around the fire.

FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. For petroleum crude oil, do not spray water directly into a breached tank car. This can lead to a dangerous boil over. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)

Section 6. Accidental Release Measures

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).

FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)

Section 7. Handling and Storage

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2024)

Section 8. Exposure Controls / Personal Protection

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2024)

Section 9. Physical and Chemical Properties

Ethyl isovalerate appears as a colorless oily liquid with a strong odor similar to apples. Less dense than water. Vapors heavier than air. May mildly irritate skin and eyes.

colourless liquid/strong, fruity, vinous, apple-like odour on dilution

131.00 to 133.00 °C. @ 760.00 mm Hg

-99.3 °C

2 mg/mL at 20 °C

soluble in propylene glycol, 1 ml in 350 ml water; miscible with alcohol, most fixed oils

(in ethanol)

0.862-0.866

1.395-1.399

Boiling point

Diamagnetic susceptibility

Dielectric constant

Heat of sublimation

Magnetic susceptibility

Optical coefficient

Refractive index

Surface tension

Thermal expansion coefficient

Vapor pressure

Viscosity

EU Flavoring substances

FLAVORING AGENT OR ADJUVANT -> FDA Substance added to food

Fragrance Ingredient (Ethyl isovalerate) -> IFRA transparency List

Fatty Acyls [FA] -> Fatty esters [FA07] -> Short fatty esters [FA0710]

Section 10. Stability and Reactivity

Highly flammable. Slightly soluble in water.

Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters

Highly Flammable

ETHYL ISOVALERATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.

Section 14. Transport Information

Flammable Liquid

Source: PubChem CID 7945 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 09:31:24.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.