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OCI produces plasticizers that improve the flexibility and low-temperature resistance of PVC products.

Product Features




Plasticizers improve the flexibility, low-temperature resistance, and processability of PVC products. They are raw materials to produce wire compounds, wallpaper, flooring, PVC film, automotive sealant (sealer), synthetic leather, etc.

Production Process

Plasticizers are categorized as phthalate-based, trimellitate-based, phosphoric acid-based and epoxy-based depending on the base material it is made from. It is produced by the ester reaction between alcohol, such as Octanol(2-EH), INA etc., and acids, such as PA, TPA, TMA, etc. Depending on the base material, different plasticizer grades are produced.

Plasticizer in Daily Life

wire, wallpaper, floor, hose

Wire, wallpaper, flooring, hose

Business Status

pohang Plant

Pohang Plant

Based on the price competitiveness of Phthalic Anhydride (PA), the base raw material for plasticizers, OCI produces major poly chloride vinyl phthalate-based plasticizers (DOP, DINP, TINIM, and DINA). In 2016, an exclusive production line for DOTP was added, further expanding OCI’s plasticizer business by 15,000 MT/yr.

Business Commencement


Production Plant Status

OCI Pohang Plant : Capacity 65,000t/yr
※ Launched a dedicated DOTP production line (15,000t/yr) in 2016.

Key Point

  • Major Korean Plasticizer Producer

    OCI maintains close relationships with worldwide companies and ensures stable product supply.

  • Cost

    Utilizing coal-based material enables greater cost competitiveness than traditional producers.

  • Responding to Market Change

    OCI continues to research and develop new plasticizers in response to changes in market demand.


  • Product Name : DOP
  • Chemical Formula :C24H38O4
  • CAS No. :177-81-7
  • Tel : 82-2-727-9618
  • E-mail :
  • Product Name : DINP
  • Chemical Formula : C26H42O4
  • CAS No. : 68515-48-0
  • Tel : 82-2-727-9618
  • E-mail :
  • Product Name : DIDP
  • Chemical Formula : C28H46O4
  • CAS No. : 68515-49-1
  • Tel : 82-2-727-9618
  • E-mail :
  • Product Name : OC-100(DOTP)
  • Chemical Formula : C24H38O4
  • CAS No. : 6422-86-2
  • Tel : 82-2-727-9618
  • E-mail :
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