Cobalt drier

  • Physical Characteristics

    AppearanceClear, middle-viscous, violet liquid
    Metal contentCo: 11.70 – 12.30 % ISO 4619
    Non-volatile content62.00 – 76.00 % ISO 3251 (2g, 3h, 105°C)
    ViscosityMax. 980 mPa.s (20°C) ISO 3219 (A)
    Specific gravityNA
    Density1.020 – 1.060 g/cm³ DIN 51757 (20 °C)
    SolventWhite-spirit containing <1 % aromatics

  • Features

    • Based on metal salts of 2-ethylhexanoic acid (octoates) or their isomers
    • Catalyzes redox reactions and even small additions result in the dissociation of autoxidant hydroperoxides and to a change in valency from Co2+ to Co3+
    • Rapid surface drying

  • Applications

    • Solvent-based systems based on alkyds and epoxy esters that dry by oxidation, including:
      • Unsaturated polyesters

  • Dosage

    In conventional alkyd formulations, the cobalt addition is between 0.03 and 0.08 %, calculated on the solid binder. In printing inks, a combination of Octa-Soligen® Cobalt and Octa-Soligen® Manganese is recommended. The amount of cobalt is between 0.03 and 0.05 %, calculated on the solid binder. Octa-Soligen® Cobalt can also be combined with Octa-Soligen® Zirconium and Octa-Soligen® Calcium. This yields outstanding results in systems that are free from heavy metals. Irrespective of these guidelines, the addition should always be determined in preliminary trials.

  • Storage

    Protect from the effects of weathering and store at temperatures below 50 °C. Once opened, containers should be resealed immediately after each removal of the product.

  • Safety

    Please refer to our safety data sheet for information relating to product safety.

Registration :

For chemical inventory status, please review section 15 of the current SDS.

Click here to access the SDS portal.

For additional regulatory information, please contact regulatory@milliken.com.

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