Prop-1-en-2-ylbenzene

C9H10

prop-1-en-2-ylbenzene

CAS98-83-9
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
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Identification

CAS Number
98-83-9
EC Number
202-705-0
UN Number
2303
Index Number
601-027-00-6
PubChem CID
7407

Physical-chemical properties

Molecular Formula
C9H10
Molar Mass
118.18 g/mol
IUPAC Name
prop-1-en-2-ylbenzene

Chemical Identifiers

InChI
InChI=1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3
InChI Key
XYLMUPLGERFSHI-UHFFFAOYSA-N

Overview

Prop-1-en-2-ylbenzene (CAS 98-83-9) is an aromatic hydrocarbon compound with a vinyl group substituent on the benzene ring, classified as a flammable liquid. This organic compound, also known by its IUPAC name prop-1-en-2-ylbenzene, belongs to the styrene family of chemicals and features a molecular formula of C9H10 with a molecular weight of 118.18 g/mol. The substance presents as a flammable liquid requiring careful handling protocols due to its classification under Flam. Liq. 3 according to GHS standards. Safety considerations are particularly important given its Carc. 2 classification and potential for eye irritation and skin sensitization. The compound exhibits typical aromatic properties combined with alkene reactivity from its prop-1-en-2-yl side chain. This dual functionality makes it valuable in various synthetic applications where both aromatic stability and vinyl group reactivity are desired. Industrial applications include use as an intermediate in polymer synthesis, particularly in the production of specialty plastics and resins. The compound also finds application in the manufacture of fine chemicals and as a building block for more complex aromatic compounds. Unlike simpler aromatic hydrocarbons such as propylbenzene, the vinyl functionality of prop-1-en-2-ylbenzene provides additional synthetic versatility. Storage and handling require adherence to ADR Class 3 regulations, with appropriate fire prevention measures and personal protective equipment mandatory. The substance's aquatic chronic toxicity classification necessitates environmental protection protocols during use and disposal. OYSI maintains reliable supply chains for prop-1-en-2-ylbenzene to support European industrial applications requiring this specialized aromatic intermediate.

Safety & Classification

Warning
Classification:

Flam. Liq. 3; Carc. 2; STOT SE 3; Eye Irrit. 2; Skin Sens. 1B; Aquatic Chronic 2

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H226

Flammable liquid and vapour.

H351

Suspected of causing cancer.

H335

May cause respiratory irritation.

H319

Causes serious eye irritation.

H317

May cause an allergic skin reaction.

H411

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

Irritant

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

Irritant

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

Irritant

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:

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 Number2303
ADR Class3
Packing GroupIII
Tunnel CodeD/E
Proper Shipping NameIsopropenylbenzen
Marine PollutantNo

Frequently Asked Questions

What is prop-1-en-2-ylbenzene?

Prop-1-en-2-ylbenzene is an aromatic hydrocarbon compound with the molecular formula C9H10 and CAS number 98-83-9. Also known as α-methylstyrene, this organic chemical belongs to the styrene family and features a benzene ring attached to a propene group. With a molecular weight of 118.18 g/mol, it appears as a colorless to pale yellow liquid with a characteristic aromatic odor. This compound is classified as a flammable liquid and requires careful handling due to its hazardous properties.

What are the physicochemical properties of prop-1-en-2-ylbenzene?

Prop-1-en-2-ylbenzene is a colorless to pale yellow liquid at room temperature with a sweet, aromatic odor reminiscent of styrene. The compound has a molecular weight of 118.18 g/mol and is poorly soluble in water but readily soluble in organic solvents such as alcohols, ethers, and hydrocarbons. It exhibits moderate volatility and can polymerize under certain conditions, particularly when exposed to heat, light, or catalysts.

What is prop-1-en-2-ylbenzene used for?

Prop-1-en-2-ylbenzene is primarily used as a chemical intermediate in the production of various polymers and resins. It serves as a monomer for manufacturing specialty plastics, adhesives, and coatings. The compound is also utilized in the synthesis of pharmaceuticals, fragrances, and other fine chemicals. In industrial applications, it acts as a reactive diluent and cross-linking agent in polymer formulations, contributing to improved material properties and performance characteristics.

How to handle prop-1-en-2-ylbenzene safely?

Prop-1-en-2-ylbenzene requires careful handling with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when necessary. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid contact with skin and eyes, and eliminate ignition sources due to its flammable nature. Use grounded equipment when transferring the material and follow proper handling procedures to prevent static electricity buildup.

How to store prop-1-en-2-ylbenzene correctly?

Prop-1-en-2-ylbenzene should be stored in a cool, dry, well-ventilated area away from heat sources, direct sunlight, and ignition sources. Keep containers tightly sealed and upright in secondary containment. Store separately from strong oxidizers, acids, and bases to prevent dangerous reactions. The storage area should be equipped with appropriate fire suppression systems and spill containment measures. Maintain storage temperatures below 25°C to prevent polymerization and ensure container integrity.

What to do in case of contact with prop-1-en-2-ylbenzene?

Immediate first aid measures for prop-1-en-2-ylbenzene exposure include removing contaminated clothing and rinsing affected skin with plenty of water for at least 15 minutes. For eye contact, flush immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move the person to fresh air and monitor breathing. Do not induce vomiting if swallowed; rinse mouth and seek immediate medical attention. Always consult a poison control center or physician for exposure incidents.

How to dispose of prop-1-en-2-ylbenzene properly?

Prop-1-en-2-ylbenzene must be disposed of as hazardous waste according to local and national regulations. Contact licensed waste disposal companies specialized in handling flammable and potentially carcinogenic materials. Do not pour down drains or release into the environment. Small quantities can be incinerated at high temperatures in authorized facilities. Always check current waste classification codes and disposal requirements, as regulations may vary by jurisdiction. Maintain proper documentation for waste tracking and compliance purposes.

How to transport prop-1-en-2-ylbenzene?

Prop-1-en-2-ylbenzene is classified under ADR transport regulations as Class 3 (flammable liquids), Packing Group III. Transportation requires appropriate UN-specification packaging and proper hazard labeling including flammable liquid markings. Vehicles must comply with ADR requirements for flammable liquid transport, including proper ventilation and fire suppression equipment. Drivers need ADR certification and transport documents must include emergency response information. Ensure packages are secured to prevent movement and damage during transit.

Is prop-1-en-2-ylbenzene subject to specific regulations?

Prop-1-en-2-ylbenzene is subject to various European regulations including REACH registration requirements and CLP classification as a Category 2 carcinogen. The substance requires safety data sheets and appropriate hazard labeling with Warning signal word and multiple GHS pictograms. While not currently listed as a Substance of Very High Concern (SVHC), it may be subject to workplace exposure limits and monitoring requirements. Companies must comply with occupational safety regulations and environmental protection measures when handling this material.

Where to buy prop-1-en-2-ylbenzene in Europe?

Prop-1-en-2-ylbenzene is available through OYSI, a specialized European distributor of technical chemicals and industrial raw materials. OYSI provides high-quality chemical products with proper documentation, safety data sheets, and regulatory compliance support across European markets. As an established chemical distributor, OYSI ensures reliable supply chains and technical expertise to support customer requirements. Contact OYSI directly for availability, specifications, and pricing information for prop-1-en-2-ylbenzene and related chemical products.

Data Sources

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