Hexene

CAS Number
4050-45-7
EC Number
223-752-3

What is Hexene?

Trans-2-Hexene (CAS 4050-45-7), also known commercially as Orgal F 4050, is a linear alpha-olefin isomer used as a reactive monomer and process solvent in petrochemical and polymer manufacturing.

Where is Hexene used?

  • Polyolefin production: comonomer that modifies density and mechanical properties of polyethylene grades for film, pipe and packaging
  • Refinery and gas processing: reference compound and process intermediate in alkylation and isomerization units
  • Industrial and institutional cleaning: component of solvent blends for hydrocarbon-based soils and residues
  • Specialty chemical synthesis: C6 olefin intermediate for plasticizers, lubricant additives and surfactant precursors
  • It serves as a building block in synthesis chains where controlled chain length and double-bond positioning are critical.

Commercial specifications

  • Technical grade; purity commonly 97% upward depending on application and catalyst testing needs

Other Names (Synonyms)

Orgal F 4050|(E)-hex-2-ene|Trans-2-hexene

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What are the physical properties of Hexene?

Melting Point -133 °C
Boiling Point 67.9 °C
Density 0.67853 g/cm³ @ Temp: 20 °C
Flash Point −5 °F
Appearance Clear colorless liquid
Color Clear colorless
Form Liquid
Vapor Pressure 263 mm Hg ( 37.7 °C)
Refractive Index n 20/D 1.396(lit.)
Log P 3.420 (est)

How is Hexene classified and handled safely? Learn More

Danger
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H225 Highly Flammable liquid and vapor
H304 May be fatal if swallowed and enters airways
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Which trade and regulatory codes apply to Hexene?

HS Code 29012990
UN Number 3295
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 3
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