Trans-2-hexenal

CAS Number

6728-26-3

FEMA Number

FEMA 2560

Industries: Food & Nutrition Personal Care & Cosmetics

What is Trans-2-hexenal?

Trans-2-hexenal (CAS 6728-26-3) is an aldehyde-based aroma chemical used in flavor and fragrance manufacturing. FEMA 2560.

Where is Trans-2-hexenal used?

Food flavoring: green apple, tomato and fresh herb notes in beverages, confectionery and savory products
Fragrance: fresh-cut green or leafy top notes in fine perfumery and functional blends
Personal care: fresh fruit or botanical scent in shampoos, body washes and skincare
Flavor reconstruction matches the volatile profile of fresh produce.

Good to know: Buyers should confirm purity grade and isomeric composition when sourcing, as trans-isomer content is critical to the intended sensory profile.

Commercial specifications

Liquid, typically at high purity levels

Other Names (Synonyms)

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What are the physical properties of Trans-2-hexenal?

Melting Point -78°C (estimate)

Boiling Point 37-38 °C @ Press: 8 Torr

Density 0.846 g/mL at 25 °C(lit.)

Flash Point 101 °F

Appearance clear colorless to light yellow liquid

Color Clear colorless to light yellow

Odor at 10.00 % in dipropylene glycol. green banana aldehydic fatty cheesy

Form Liquid

Water Solubility Insoluble

Vapor Pressure 10 mm Hg ( 20 °C)

Refractive Index n 20/D 1.446(lit.)

Log P 1.58 at 25℃

How is Trans-2-hexenal classified and handled safely? Learn More

Hazard Statements

H226 (99.3%): Flammable liquid and vapor [Warning Flammable liquids]

H302 Harmful if swallowed [Warning Acute toxicity, oral]

H311 Toxic in contact with skin [Danger Acute toxicity, dermal]

H315 (25.3%): Causes skin irritation [Warning Skin corrosion/irritation]

Which trade and regulatory codes apply to Trans-2-hexenal?

HS Code 29121900

UN Number 1988

ADR Class 3

Packing Group III

WGK (Germany) 2