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Synthetic aroma chemicals

3-Hexenal

Also known as (E)-Hex-3-enal, trans-3-Hexenal, 3-Hexenal, (E)-

CAS 4440-65-7Formula C6H10OMolar mass 98.15 g/molEC 224-659-0
GHS signal word: Warning. Pictograms: Flammable, Harmful or irritant
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3-Hexenal chemical structure, C6H10O, CAS 4440-65-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4440-65-7
Formula
C6H10O
Molar mass
98.15 g/mol
Physical form
Liquid
HS code
291219
Category
Synthetic aroma chemicals
Illustrative photo, closed blue jerry cans in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 3-Hexenal?

Plain description, key identifiers and synonyms

3-hexenal is a hexenal carrying an unsaturation at position 3.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-hex-3-enal
CAS number
4440-65-7 CAS number cross-checkedOther or deprecated CAS: 69112-21-6
EC numbers
224-659-0, 273-874-6
Molecular formula
C6H10O
UNII
BS0QS8NC0S
INCI name
3-HEXENAL, TRANS-3-HEXENAL
InChIKey
GXANMBISFKBPEX-ONEGZZNKSA-N
InChI
InChI=1S/C6H10O/c1-2-3-4-5-6-7/h3-4,6H,2,5H2,1H3/b4-3+
Canonical SMILES
CCC=CCC=O
Isomeric SMILES
CC/C=C/CC=O

Synonyms

  • (E)-Hex-3-enal
  • trans-3-Hexenal
  • 3-Hexenal, (E)-
  • hex-3-enal
  • (3E)-hex-3-enal
  • 3-Hexenal, trans-
  • (E)-3-Hexenal
  • 3-Hexenal, (3E)-
  • 3-Hexenal (trans/cis mix)
  • (E)-3-hexen-1-al
  • (Z)-hex-3-enal, 50% in triacetin
  • (3e)-hexenal
  • trans-hex-3-enal
  • (3E)-3-hexenal
  • Hex-cis-3-en-1-al
  • 3-Hexenal, trans

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
98.15 g/molcalc.
Exact mass
98.0732 Dacalc.
LogP (octanol/water)
1.54calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
3calc.
Heavy atoms
7calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H226Flammable liquid and vapour.
  • H302Harmful if swallowed.
Precautionary statements (15)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P330Rinse mouth.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

3-Hexenal suppliers

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3-Hexenal price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Cosmetic ingredient, INCI name 3-HEXENAL(perfuming)

Functional uses

  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Perfuming

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 3-Hexenal is traded under.

HS 2912.19Indicative HS code

Acyclic aldehydes without other oxygen function, other

World exports in 2024
$679M
+4.8% vs 2023, imports $743M
2019 to 2024
Top exporters
  1. Germany22.0%
  2. China21.2%
  3. United States18.5%
Top importers
  1. United States13.1%
  2. Germany9.6%
  3. Belgium8.2%
Reported customs values in USD, not prices.Full trade data

The HS code shown for 3-Hexenal is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 3-Hexenal, based on the data on this page

What is 3-Hexenal?

3-hexenal is a hexenal carrying an unsaturation at position 3.

What is the CAS number of 3-Hexenal?

The CAS registry number of 3-Hexenal is 4440-65-7. Other or deprecated CAS numbers: 69112-21-6.

What is the molecular formula and weight of 3-Hexenal?

The molecular formula of 3-Hexenal is C6H10O and its molar mass is 98.15 g/mol.

What is 3-Hexenal used for?

Known uses and roles of 3-Hexenal include fragrance ingredients in cosmetics and personal care, fragrance ingredients in flavors and fragrances, aldehydes and ketones in flavors and fragrances, perfuming, flavouring and nutrient and 1 more.

Is 3-Hexenal hazardous?

3-Hexenal carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour, harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 3-Hexenal?

3-Hexenal is usually classified under HS code 291219 (Acyclic aldehydes without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 3-Hexenal?

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What is the price of 3-Hexenal?

Suppliers quote 3-Hexenal on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 3-Hexenal

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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