2,3-dichloroprop-1-ene

C3H4Cl2

CAS78-88-6
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
Danger

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Identification

CAS Number
78-88-6
EC Number
201-153-8
UN Number
2047
Index Number
602-079-00-2
PubChem CID
6565

Physical-chemical properties

Molecular Formula
C3H4Cl2
Molar Mass
110.97 g/mol
IUPAC Name
2,3-dichloroprop-1-ene

Chemical Identifiers

InChI
InChI=1S/C3H4Cl2/c1-3(5)2-4/h1-2H2
InChI Key
FALCMQXTWHPRIH-UHFFFAOYSA-N

Overview

2,3-dichloroprop-1-ene (CAS 78-88-6) is a halogenated alkene compound with significant flammability and mutagenic properties. This organochlorine compound, with the molecular formula C3H4Cl2 and molecular weight of 110.97 g/mol, represents an important intermediate in chemical synthesis and industrial applications. Also identified by EC number 201-153-8, this dichlorinated propene derivative exhibits characteristic properties of halogenated olefins, making it valuable in various chemical processes while requiring careful handling protocols. The compound's classification under multiple hazard categories reflects its complex safety profile. As a Flammable Liquid Category 2 substance, it poses significant fire risks and requires appropriate storage conditions away from ignition sources. The Mutagenicity Category 2 classification indicates potential genetic effects, while its Acute Toxicity Category 4 ratings across multiple exposure routes emphasize the need for comprehensive protective measures during handling and processing. The presence of GHS pictograms including flame (GHS02), health hazard (GHS08), exclamation mark (GHS07), and corrosion (GHS05) signals reinforces the danger classification and mandatory safety protocols. Transportation falls under ADR Class 3, requiring specialized logistics arrangements for safe distribution. Industrial applications typically include use as a chemical intermediate in organic synthesis, particularly in the production of specialized polymers and agricultural chemicals. The compound's reactivity profile makes it suitable for various alkylation and substitution reactions. In the broader context of halogenated compounds, it shares certain chemical characteristics with other chlorinated derivatives, though with distinct properties compared to compounds like 2-methoxypropan-1-ol which exhibits different functional group chemistry. OYSI maintains technical-grade 2,3-dichloroprop-1-ene availability for qualified industrial customers across European markets, supporting applications requiring high chemical purity and consistent quality standards.

Safety & Classification

Danger
Classification:

Flam. Liq. 2; Muta. 2; Acute Tox. 4 *; Acute Tox. 4 *; Acute Tox. 4 *; STOT SE 3; Skin Irrit. 2; ...

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H225

Highly flammable liquid and vapour.

H341

Suspected of causing genetic defects.

H332

Harmful if inhaled.

H312

Harmful in contact with skin.

H302

Harmful if swallowed.

H335

May cause respiratory irritation.

H315

Causes skin irritation.

H318

Causes serious eye damage.

H412

Harmful 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

Harmful

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

Harmful

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

Harmful

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 Number2047
ADR Class3
Packing GroupII
Tunnel CodeD/E
Proper Shipping Name2,3-Dichlor-1-propen
Marine PollutantNo

Frequently Asked Questions

What is 2,3-dichloroprop-1-ene?

2,3-dichloroprop-1-ene is an organochlorine compound with the molecular formula C3H4Cl2 and CAS number 78-88-6. This chemical substance has a molecular weight of 110.97 g/mol and belongs to the class of halogenated alkenes. It is classified as a flammable liquid with significant health hazards including mutagenic properties and acute toxicity. The compound requires careful handling due to its dangerous classification under GHS regulations.

What are the physicochemical properties of 2,3-dichloroprop-1-ene?

2,3-dichloroprop-1-ene is a flammable liquid at room temperature with a molecular weight of 110.97 g/mol. As an organochlorine compound, it typically exhibits low water solubility but good solubility in organic solvents. The substance contains two chlorine atoms attached to a propene backbone, giving it its characteristic chemical reactivity. Its flammable nature requires appropriate storage and handling conditions to prevent ignition hazards.

What is 2,3-dichloroprop-1-ene used for?

2,3-dichloroprop-1-ene is primarily used as an intermediate in chemical synthesis and industrial processes. Given its reactive double bond and chlorine substituents, it serves as a building block for manufacturing various organic compounds. The substance finds applications in specialized chemical production where halogenated alkenes are required. However, due to its hazardous properties including mutagenicity and toxicity, its use is restricted to professional industrial applications with appropriate safety measures.

How to handle 2,3-dichloroprop-1-ene safely?

2,3-dichloroprop-1-ene must be handled with extreme caution due to its flammable, toxic, and mutagenic properties. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation. Avoid skin contact, ingestion, and exposure to ignition sources. Only trained personnel should handle this substance, following strict safety protocols and emergency procedures.

How to store 2,3-dichloroprop-1-ene correctly?

2,3-dichloroprop-1-ene must be stored in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames due to its flammable nature. Use appropriate containers resistant to organochlorine compounds and ensure proper labeling with GHS pictograms. Storage areas should be equipped with fire suppression systems and spill containment measures. Keep away from incompatible materials and ensure access is restricted to authorized personnel only.

What to do in case of contact with 2,3-dichloroprop-1-ene?

In case of skin contact with 2,3-dichloroprop-1-ene, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush with clean water for 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult emergency services and provide the safety data sheet.

How to dispose of 2,3-dichloroprop-1-ene appropriately?

2,3-dichloroprop-1-ene must be disposed of as hazardous waste through licensed waste management companies specializing in halogenated organic compounds. Never dispose of this substance through regular waste streams, sewers, or soil. Contact certified hazardous waste disposal services that can handle flammable and toxic chemicals. Maintain proper documentation of disposal activities and ensure compliance with local, national, and European waste regulations including the Waste Framework Directive.

How to transport 2,3-dichloroprop-1-ene?

2,3-dichloroprop-1-ene is classified as ADR Class 3 (Flammable Liquids), Packing Group II, requiring specialized transport procedures. Shipments must use approved containers and packaging that meet ADR specifications for dangerous goods. Transport vehicles need appropriate placarding and documentation including transport documents and emergency response information. Only certified carriers experienced in handling hazardous materials should transport this substance, ensuring compliance with European dangerous goods transport regulations.

Is 2,3-dichloroprop-1-ene subject to specific regulations?

2,3-dichloroprop-1-ene is subject to extensive European chemical regulations including REACH registration requirements and CLP classification obligations. The substance carries multiple hazard classifications including mutagenic properties, requiring strict compliance with occupational safety regulations. Users must maintain safety data sheets, implement risk management measures, and ensure proper worker protection. Although not currently listed as an SVHC, its hazardous properties require careful regulatory compliance monitoring.

Where to buy 2,3-dichloroprop-1-ene in Europe?

2,3-dichloroprop-1-ene is available through OYSI, a specialized European distributor of technical chemicals and hazardous substances. OYSI provides this regulated chemical to qualified industrial customers with proper handling capabilities and regulatory compliance. Due to the substance's hazardous classification, purchase is restricted to professional users who can demonstrate appropriate safety measures, storage facilities, and waste management procedures. Contact OYSI directly for availability and technical support.

Data Sources

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