Phone: +86 158 3220 2989
E-mail: chem@fairskyindustrial.com
Phone: +86 158 3220 2989
E-mail: chem@fairskyindustrial.com
Cobalt Hydroxide
| Formula | CAS No. | Content |
|---|---|---|
| Co(OH)2 | 21041-93-0 | 62%min |
It is a kind of light pink powder, specific gravity 3.597, soluble in acid and ammonium salt solution, insoluble in water and alkali. It reacts with organic acids to form cobalt soap.
Raw materials for cobalt salt manufacture, drier agent of paint and varnish, as well as catalyst for hydrogen peroxide decomposition.
Store at a ventilating and dry place, prevent damp and rain.
25kg net, Paper/PE complex bags with double PE inners.
Is cobalt hydroxide stable at room temperature? Is it easily oxidized?
FAIRSKY Cobalt Hydroxide In a dry, sealed environment at room temperature, is relatively stable.FAIRSKY cobalt hydroxide, when stored in a dry, airtight, and light-protected environment at room temperature, maintains a relatively stable structure and chemical properties and is not prone to spontaneous decomposition.
Why is cobalt hydroxide easily used as a drying agent in paints/coatings compared to other cobalt products?
1.Alkaline-Compatible Coating Systems
FAIRSKY Cobalt hydroxide is weakly alkaline, making it compatible with alkyd paints and oil-based resins, reducing the likelihood of demulsification and precipitation.
2.Easily Converts to Active Cobalt Soap
In factory use: Cobalt hydroxide reacts with organic acids to form organic acid cobalt soaps, which are perfectly soluble in the oil phase, well-dispersed, and fully release their catalytic activity.
3.Few Impurities, Good Stability
Industrial high-purity cobalt hydroxide has low levels of heavy metal impurities, preventing yellowing, brittleness, and discoloration defects in the paint film.
Why is cobalt hydroxide particularly suitable for oil-based paints?
1. Perfect Processing Compatibility
Oil-based factories first react fatty acids/naphthenic acids/isooctanoic acid with cobalt hydroxide to generate oil-soluble cobalt soap, which is completely dissolved in the resin oil phase, uniformly dispersed, and with full catalytic activity.
2. System Acid-Base Matching
The solvent-based alkyd system operates in a slightly acidic or slightly alkaline environment, where the cobalt soap remains stable, without precipitation or flocculation.
3. Highly Compatible Drying Mechanism
Oil-based paints rely on oxygen absorption and oxidative crosslinking, with highly efficient catalysis through valence state cycling, resulting in extremely strong surface drying; this is a classic primary drying system.
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