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Synthetic aroma chemicals

Propanal

Also known as Propionaldehyde, Propanaldehyde, Propylaldehyde

CAS 123-38-6Formula C3H6OMolar mass 58.08 g/molEC 204-623-0
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant 67 suppliers listed
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Propanal chemical structure, C3H6O, CAS 123-38-6
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Liquid
Melting point
-80 °C
Boiling point
48 °C
Density
0.8657 g/cm³ at 25 °C
Flash point
-30 °C
HS code
291219
Category
Synthetic aroma chemicals
UN number
UN 1275
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Propanal?

Plain description, key identifiers and synonyms

Propanal is an aldehyde that consists of ethane bearing a formyl substituent. The parent of the class of propanals. It has a role as an Escherichia coli metabolite. It is a member of propanals and an alpha-CH2-containing aldehyde.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
propanal
CAS number
123-38-6 CAS number cross-checkedOther or deprecated CAS: 25722-18-3
EC number
204-623-0
Molecular formula
C3H6O
UNII
AMJ2B4M67V
MDL number
MFCD00007020
INCI name
PROPIONALDEHYDE
InChIKey
NBBJYMSMWIIQGU-UHFFFAOYSA-N
InChI
InChI=1S/C3H6O/c1-2-3-4/h3H,2H2,1H3
SMILES (canonical and isomeric)
CCC=O

Synonyms

  • Propionaldehyde
  • Propanaldehyde
  • Propylaldehyde
  • Propaldehyde
  • Methylacetaldehyde
  • n-Propanal
  • Propional
  • Propionic aldehyde
  • 1-Propanal
  • Propylic aldehyde
  • n-Propionaldehyde
  • Propyl aldehyde
  • Aldehyde propionique
  • 1-Propanone
  • Proponal
  • Propanalaldehyde
  • Proprionaldehyde
  • UN 1275
  • Propionaldehyde (>80%)
  • Propionaldehyd
  • Propionaldehyde (natural)
  • proprionaldhyde
  • propion aldehyde
  • Ethylcarboxyaldehyde
  • Propionaldehyde, 97%
Show all 31 synonyms
  • Propionaldehyde, >=97%, FG
  • 2-methyl-branched fatty aldehyde
  • Propionaldehyde, analytical standard
  • Propionaldehyde, reagent grade, 97%
  • Propionaldehyde, natural, >=98%, FG
  • Propionaldehyde [UN1275] [Flammable liquid]

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

Appearance
Liquidexp.
Odour
SUFFOCATING, FRUITYexp.
Melting point
-80 °Cexp.
Boiling point
48 °Cexp.
Density
0.8657 g/cm³ at 25 °Cexp.
Flash point
-30 °Cexp.
Autoignition temperature
207 °Cexp.
Solubility
Soluble in water, miscible with ethanol, ethyl etherexp.
Vapour pressure
317 mm Hg at 25 °Cexp.

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
58.08 g/molcalc.
Exact mass
58.0419 Dacalc.
LogP (octanol/water)
0.6calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
4calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
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
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
322WNFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (25)
  • 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.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1275
Transport hazard class
3
Packing group
II

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

Propanal suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 67 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

67 suppliers in 12 countries

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Propanal 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

Intermediate in the mfr of trimethylolethane for use in alkyd resin systems and, in certain cases, it is oxidized to propionic acid and reduced to propyl alcohol, in medicinal and agricultural chemical preparations.

Manufacture of propionic acid, polyvinyl and other plastics, synthesis of rubber chemicals, disinfectant, preservative.

Reported uses (ppm): (FEMA, 2005)

Table: Reported uses (ppm): (FEMA, 2005) [Table#2979].

Used as a synthetic flavoring...

Industrial uses: Monomers, Intermediate.

Cosmetic ingredient, INCI name PROPIONALDEHYDE(perfuming)

Roles

  • Escherichia coli metabolite
  • bacterial metabolite
  • metabolite
  • prokaryotic metabolite

Functional uses

  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Perfuming

How it is made

Prepared by treating propyl alcohol with a bichromate oxidizing mixture, ... by passing propyl alcohol vapor over copper at high temp.

Synthesis by ... dry distillation of barium propionate with calcium formate.

(A) Oxidation of propyl alcohol with dichromate, (B) By passing alcohol over copper at elevated temperatures.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 605-018-00-8

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 Propanal 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 Propanal is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Propanal, based on the data on this page

What is Propanal?

Propanal is an aldehyde that consists of ethane bearing a formyl substituent. The parent of the class of propanals. It has a role as an Escherichia coli metabolite. It is a member of propanals and an alpha-CH2-containing aldehyde.

What is the CAS number of Propanal?

The CAS registry number of Propanal is 123-38-6. Other or deprecated CAS numbers: 25722-18-3.

What is the molecular formula and weight of Propanal?

The molecular formula of Propanal is C3H6O and its molar mass is 58.08 g/mol.

What is Propanal used for?

Intermediate in the mfr of trimethylolethane for use in alkyd resin systems and, in certain cases, it is oxidized to propionic acid and reduced to propyl alcohol, in medicinal and agricultural chemical preparations.

Is Propanal hazardous?

Propanal carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Propanal?

Propanal 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 Propanal?

CompoundList lists 67 suppliers of Propanal in China, United States, India, United Kingdom and 8 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Propanal in India?

12 suppliers in India list Propanal on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Propanal?

Suppliers quote Propanal 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 Propanal

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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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