Cobalt Octoate 6% Co CAS 136-52-7 Primary Surface Drier for Alkyd Paint and Printing Ink
Cobalt Octoate 6% Co (CAS 136‑52‑7) is a classic oil‑soluble primary surface drier based on cobalt 2‑ethylhexanoate. It effectively promotes oxidative cross‑linking on film surface for alkyd paint and printing ink. It features good miscibility with alkyd resins, stable drying activity and moderate curing speed, widely adopted in general‑purpose alkyd coatings and printing ink formulations.
Product Overview
Cobalt Octoate 6% Co CAS 136‑52‑7 is an oil‑soluble cobalt‑based primary surface drier manufactured from cobalt 2‑ethylhexanoate. When added into alkyd paint and printing ink, it catalyzes oxidative polymerization of unsaturated alkyd resin, greatly accelerating surface drying of coating film. This product shows excellent compatibility with various solvent‑borne alkyd systems. It keeps stable drier activity during storage and brings predictable surface curing effect for conventional alkyd coatings and printing inks.
Key Features
‑ Standard 6% cobalt content, reliable primary surface drying performance ‑ Oil‑soluble, good miscibility with long‑oil, medium‑oil alkyd resins ‑ Accelerates oxidative surface curing for alkyd paint and printing ink ‑ Stable catalytic activity under normal storage condition ‑ Compatible with other metal driers such as zirconium, calcium drier ‑ Widely used for general‑purpose alkyd paint and printing ink production ‑ Consistent batch‑to‑batch quality for industrial mass production
Technical Specifications
‑ Product Name: Cobalt Octoate (Cobalt 2‑Ethylhexanoate) ‑ Cobalt Content: 6% Co ‑ CAS No.: 136‑52‑7 ‑ Appearance: Reddish‑brown transparent liquid ‑ Solubility: Soluble in hydrocarbon solvents, alkyd resins ‑ Density: 0.95‑1.05 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.2%
Application Scenarios
‑ General‑purpose alkyd paint: primary surface drier for air‑drying alkyd coatings ‑ Printing ink: surface curing accelerator for oxidative drying printing ink ‑ Long‑oil and medium‑oil alkyd enamel, decorative paint ‑ Solvent‑borne anti‑rust paint, furniture alkyd varnish ‑ Matching use with auxiliary driers for complete through‑dry performance
Usage Recommendation
‑ Typical dosage: 0.1%‑0.6% calculated on total paint weight (based on metal cobalt) ‑ Mix with other driers first before adding into paint formulation ‑ Do not add directly into high‑temperature resin synthesis stage ‑ Combine with zirconium or calcium drier to balance surface drying and through‑drying ‑ Adjust addition amount according to resin type, film thickness and drying requirement ‑ Conduct lab formula test before mass production.
Package & Storage
‑ Standard package: 25kg / 200kg metal drum ‑ Store in cool, dry and well‑ventilated place. Keep away from heat, flame and direct sunlight ‑ Keep container tightly sealed after opening to prevent oxidation and solvent volatilization ‑ Shelf life: 12 months under proper storage
Safety Notes
‑ Combustible liquid. Keep far from ignition sources. ‑ Avoid skin and eye contact. Wear chemical resistant gloves and goggles during handling. ‑ Do not inhale vapor or mist. Use local ventilation system. ‑ Refer to SDS for full information on handling, transportation and emergency treatment.
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