Cobalt Octoate 10% Co CAS 136-52-7 Primary Drier for Medium Oil Alkyd Industrial Paint and Ink
Cobalt Octoate 10% Co CAS 136‑52‑7 is oil‑soluble cobalt‑based primary drier with 10% cobalt metal content. It is specially developed for medium oil alkyd industrial paint and printing ink. It effectively catalyzes air‑oxidative cross‑linking of unsaturated alkyd resins to realize rapid surface drying. It features high catalytic activity, excellent resin compatibility and stable batch performance, widely used in industrial coatings and ink manufacturing.
Product Overview
Cobalt Octoate 10% Co CAS 136‑52‑7 is oil‑soluble cobalt 2‑ethylhexanoate serving as high‑efficiency primary drier. Under air exposure, it triggers oxidative polymerization of unsaturated groups inside medium‑oil alkyd resins, greatly shortening surface drying time of paint film. Its 10% cobalt content delivers stronger drying activity than lower‑cobalt grades. It shows favorable miscibility with medium‑oil alkyd, hydrocarbon solvents and common ink binders, maintaining stable catalytic performance during storage and production.
Key Features
‑ 10% cobalt metal content, high‑efficiency primary surface drying activity ‑ Excellent solubility and compatibility with medium oil alkyd resins ‑ Accelerates oxidative curing for industrial paint and printing ink films ‑ Fast surface drying without obvious wrinkling risk under proper dosage ‑ Compatible with zirconium, calcium and other auxiliary driers for through‑dry effect ‑ Stable catalytic activity under normal storage condition ‑ Consistent batch‑to‑batch quality for large‑scale industrial production ‑ Suitable for medium‑oil alkyd‑based industrial coatings and ink systems
Technical Specifications
‑ Product Name: Cobalt Octoate (Cobalt 2‑Ethylhexanoate) ‑ Cobalt Content: 10% Co ‑ CAS No.: 136‑52‑7 ‑ Appearance: Reddish‑brown transparent liquid ‑ Solubility: Soluble in xylene, mineral spirits and alkyd resins ‑ Density: 0.98‑1.08 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.2%
Application Scenarios
‑ Medium oil alkyd industrial paint: air‑dry industrial enamel, machinery finishing paint ‑ Printing ink: oxidative drying ink requiring fast surface cure ‑ General‑purpose solvent‑borne alkyd varnish and decorative coatings ‑ Anti‑rust paint based on medium‑oil alkyd resin ‑ Combined usage with auxiliary driers to achieve complete through‑film drying
Usage Recommendation
‑ Typical dosage: 0.08%‑0.45% calculated on total paint weight (as metal cobalt) ‑ Premix with other driers before adding into coating or ink formulations ‑ Prohibit addition during high‑temperature resin synthesis process ‑ Cooperate with zirconium or calcium drier to balance surface drying and through‑drying ‑ Adjust addition level according to resin property, film thickness and drying requirement ‑ Perform laboratory formula verification before mass‑scale production
Package & Storage
‑ Standard package: 25kg / 200kg metal drum ‑ Store in cool, dry and well‑ventilated warehouse, keep away from heat and open flame ‑ Keep container tightly sealed after opening to avoid solvent volatilization and oxidation ‑ Shelf life: 12 months under correct storage conditions
Safety Notes
‑ Combustible liquid, keep away from all ignition sources. ‑ Prevent skin contact and eye splash; wear chemical‑resistant gloves and safety goggles during handling. ‑ Avoid inhalation of vapor and mist, ensure adequate local ventilation. ‑ Refer to SDS for complete guidance on handling, transportation and emergency disposal.
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