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Fumed silica

OCI provides state of the art nano-sized fumed silica by building up global partnership with customized service.

Product Features

Fumed Silica

Fumed Silica


Fumed silica is a basic functional product used in construction, automobile, semiconductors, etc. It acts as a function reinforcement agent, and it can also optimize a product by improving anti-sagging and anti-settling effects or abrasive properties. The fumed silica business continues to advance alongside the growth of mobile phone, kitchenware, cosmetics, construction, automobile, semiconductors, shipbuilding, etc.

Production Process

Fumed silica is synthesized from the hydrolysis of high purity silane in a flame of oxygen and hydrogen at temperature over 1000. The raw material, silane, synthesized through a reaction of metallurgical silicon, which is obtained through a reduction of mineral silicon dioxide (SiO2) with cokes, and hydrogen chloride.

OCI Status

Gunsan plant

Gunsan plant

OCI recognized the potential market and growth of the global silicone industry, and initiated the production of fumed silica, which is the base material for the silicone industry, as the pioneer in Korea. Today OCI is Korea's leading producer with a production capacity of 10,000 metric tons of fumed silica including hydrophobic fumed silica for high value applications to meet growing market demand.

Business Commencement


Production Plant Status

- OCI Gunsan plant (Capa : 10,000MT/yr)

Major Markets

Korea, China, Japan, Taiwan, Asia, Europe, USA, Middle East and Africa

Key Point

  • Global Sales Network

    Optimized product sales on each continent

  • Eco-Friendly

    Eco-friendly material is used in various applications, offering convenience to people

  • Customer Satisfaction

    Supplying personalized products through continuous technological development and rigid quality control


  • Product Name : Fumed Silica (Hydrophilic, Hydrophobic)
  • Chemical Formula : SiO2
  • CAS No. : Hydrophilic (112945-52-5), Hydrophobic (7631-86-9)
  • Certification : ISO9001, ISO14001, KOSHA18001, KOSHER, HALAL, REACH (EU)
  • Tel :
    • - (Domestic) : +82-2-727-9418
    • - (Export) : +82-2-727-9536
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