Prop-2-enal

C3H4O

prop-2-enal

CAS107-02-8
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS06 Gefahrensymbol: Giftig – Totenkopf mit Knochen
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
Danger

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Identification

CAS Number
107-02-8
EC Number
203-453-4
UN Number
1092
Index Number
605-008-00-3
PubChem CID
7847

Physical-chemical properties

Molecular Formula
C3H4O
Molar Mass
56.06 g/mol
IUPAC Name
prop-2-enal

Chemical Identifiers

InChI
InChI=1S/C3H4O/c1-2-3-4/h2-3H,1H2
InChI Key
HGINCPLSRVDWNT-UHFFFAOYSA-N

Overview

Prop-2-enal (CAS 107-02-8) is an unsaturated aldehyde with highly reactive properties and significant industrial applications. Also known by its common name acrolein, prop-2-enal represents a critical intermediate in chemical manufacturing processes. This α,β-unsaturated aldehyde features a molecular formula of C3H4O with a molecular weight of 56.06 g/mol, characterized by its distinctive pungent odor and exceptional reactivity due to the presence of both aldehyde and alkene functional groups. The compound's structure makes it highly susceptible to polymerization and various addition reactions, properties that are both valuable in synthesis and concerning from a safety perspective. The safety profile of prop-2-enal demands careful attention, as evidenced by its classification under multiple hazard categories including acute toxicity, skin corrosion, and environmental hazards. The substance requires handling under strict safety protocols due to its corrosive nature and potential for severe health effects. Its flammable liquid classification (Flam. Liq. 2) and ADR class 6.1 designation further emphasize the need for specialized storage and transportation procedures. Industrial applications of prop-2-enal span several sectors, primarily in the production of acrylic acid and related derivatives used in polymer manufacturing. The compound serves as a key intermediate in the synthesis of glycerol and various pharmaceutical compounds. Unlike simpler aldehydes such as (E)-but-2-enal, prop-2-enal's dual reactivity sites make it particularly valuable for creating complex molecular structures in chemical synthesis. OYSI maintains reliable supply chains for prop-2-enal, ensuring consistent availability for European industrial customers requiring this essential chemical intermediate.

Safety & Classification

Danger
Classification:

Flam. Liq. 2; Acute Tox. 1; Acute Tox. 3; Acute Tox. 2; Skin Corr. 1B; Aquatic Acute 1; Aquatic C...

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H225

Highly flammable liquid and vapour.

H330

Fatal if inhaled.

H311

Toxic in contact with skin.

H300

Fatal if swallowed.

H314

Causes severe skin burns and eye damage.

H400

Very toxic to aquatic life.

H410

Very toxic to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Fatal

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

Skin Contact

Toxic

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Harmful

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

Ingestion

Fatal

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call a POISON CENTER/doctor.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number1092
ADR Class6.1
Packing GroupI
Tunnel CodeC/D
Proper Shipping NameAcrolein, stabilisiert
Marine PollutantNo

Frequently Asked Questions

What is prop-2-enal?

Prop-2-enal is an organic chemical compound with the molecular formula C3H4O and CAS number 107-02-8. Also known as acrolein, it is an unsaturated aldehyde with a molecular weight of 56.06 g/mol. This highly reactive compound is characterized by its flammable nature and significant toxicity profile, classified under multiple hazard categories including acute toxicity and skin corrosion. It poses serious health and environmental risks requiring careful handling.

What are the physicochemical properties of prop-2-enal?

Prop-2-enal is a colorless liquid with a characteristic pungent, acrid odor at room temperature. As an unsaturated aldehyde, it exhibits high reactivity due to its double bond and carbonyl group. The compound is highly flammable (Flam. Liq. 2) and miscible with water and most organic solvents. Its low molecular weight and volatile nature make it easily evaporable, contributing to its hazardous inhalation potential.

What is prop-2-enal used for?

Prop-2-enal serves as an important intermediate in chemical synthesis and industrial manufacturing. It is primarily used in the production of acrylic acid and its derivatives, glycerol synthesis, and as a precursor for various polymers and resins. The compound also finds applications in the pharmaceutical industry as a building block for drug synthesis and in the production of certain pesticides and biocides, though its high toxicity limits direct consumer applications.

How to handle prop-2-enal safely?

Prop-2-enal requires extreme caution during handling due to its acute toxicity and corrosive properties. Essential personal protective equipment includes chemical-resistant gloves, full face protection, and appropriate respiratory protection in well-ventilated areas. Work should be conducted in fume hoods or enclosed systems to prevent inhalation exposure. Avoid skin and eye contact completely, as the compound causes severe burns and tissue damage. Emergency washing facilities must be immediately accessible.

How to store prop-2-enal correctly?

Prop-2-enal must be stored in cool, dry, well-ventilated areas away from heat sources and ignition points due to its flammable nature. Use only approved containers resistant to corrosive materials and ensure secondary containment systems are in place. The compound should be kept away from bases, strong oxidizing agents, and reducing materials that could trigger hazardous reactions. Storage areas require appropriate fire suppression systems and restricted access protocols.

What to do in case of contact with prop-2-enal?

Prop-2-enal contact requires immediate emergency response due to its corrosive and toxic nature. For skin contact, immediately flush with copious amounts of water for at least 15 minutes while removing contaminated clothing. Eye contact demands immediate irrigation with water and urgent medical attention. If inhaled, move the person to fresh air and seek immediate medical care. For ingestion, do not induce vomiting and obtain emergency medical treatment immediately.

How to dispose of prop-2-enal appropriately?

Prop-2-enal disposal must comply with local and international hazardous waste regulations due to its toxic and environmentally harmful properties. The compound cannot be disposed of through normal waste streams and requires specialized hazardous waste treatment facilities. Small quantities may be neutralized through controlled chemical treatment by trained personnel, but larger amounts need professional waste management services. Aquatic discharge is strictly prohibited due to acute aquatic toxicity.

How to transport prop-2-enal?

Prop-2-enal transportation falls under ADR Class 6.1 (Toxic substances), Packing Group I, indicating maximum transport danger level. Shipping requires specialized hazardous material containers meeting UN specification standards and proper hazard labeling including GHS pictograms (GHS02, GHS06, GHS05, GHS09). Transporters must be certified for dangerous goods handling, and shipments require appropriate documentation including safety data sheets and emergency response procedures.

Is prop-2-enal subject to specific regulations?

Prop-2-enal is subject to extensive regulatory oversight under multiple frameworks including REACH registration requirements and CLP classification regulations. While not currently listed as an SVHC (Substance of Very High Concern), its acute toxicity classification and environmental hazards place it under strict industrial use restrictions. Manufacturing, import, and use require compliance with occupational exposure limits, environmental discharge restrictions, and comprehensive risk assessment documentation for regulatory authorities.

Where to buy prop-2-enal in Europe?

Prop-2-enal is available through specialized chemical distributors in Europe, with OYSI serving as a reliable supplier for industrial and research applications. As a highly regulated toxic substance, procurement requires verification of legitimate industrial use, appropriate handling capabilities, and compliance with safety regulations. Professional buyers should ensure their facilities meet storage and safety requirements before ordering. Contact OYSI's technical team for availability, specifications, and regulatory guidance for your specific application requirements.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.