Product

Product Models
Insights
Solutions
Main Product
Xylenes
Segment
Chemicals
Main-Family
Aromatics
Sub-Family
Xylenes & Homologues
Physical State

Liquid

Product
C8 Raffinate
Production
Production Production  

Description

C8 raffinate is the para-xylene depleted aromatic hydrocarbon stream recovered from xylene separation units, consisting primarily of a mixture of C8 aromatic isomers that remain after the selective removal of para-xylene. This stream contains the non-adsorbed or rejected aromatic compounds from the para-xylene recovery process.

Key Characteristics and Composition

Primary Components:

  • Meta-xylene (m-xylene): Typically 40-60% of the C8 raffinate composition
  • Ortho-xylene (o-xylene): Generally 15-25% of the stream
  • Ethylbenzene: Usually 15-25% of the composition
  • Para-xylene (residual): Less than 1.0% and preferably less than 0.5% in properly operating systems

Physical Properties:

  • Molecular formula: Mixture of C8H10 isomers
  • Boiling range: Approximately 136-144°C (covering the boiling points of individual C8 aromatic isomers)
  • Appearance: Clear, colorless liquid with aromatic odor
  • Density: Similar to other C8 aromatics, approximately 0.86-0.88 g/cm³

References

  1. UOP, Capturing Opportunities in Para-Xylene Production
  2. Justia Patents, Process and apparatus for para-xylene production
  3. Google Patents, Apparatus for separating para-xylene from aromatics
  4. GCC Patent Office, Process for producing para-xylene using simulated moving bed

 

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Title Date
Identifiers

No Identifiers defined

Chemical Data
Molecular Weight (g/mol)
106.16
Boiling Point (°C)
140
Specific Gravity
0.87
Crude Data
API Gravity
31.14
Country
Product Settings
Default
Status
A
Content provided by
Transaction Name Date
Modified by UserPic   Kokel, Nicolas 7/20/2025 6:45 PM
Added by UserPic   Kokel, Nicolas 7/20/2025 6:44 PM