Cobalt Hydroxide

Cobalt Hydroxide manufacturer| Fairsky Cobalt Hydroxide

Cobalt Hydroxide is a key intermediate in the cobalt chemical industry, featuring stable performance and broad applicability. It is widely used in cobalt salt manufacturing, paint and varnish driers, and as a catalyst for hydrogen peroxide decomposition.
Formula CAS No. Content
Co(OH)2 21041-93-0 62%min
Inquire Now +
Cobalt Hydroxide CAS No.21041-93-0,fairsky
Cobalt Hydroxide CAS No.21041-93-0,fairsky
Cobalt Hydroxide CAS No.21041-93-0,fairsky
Cobalt Hydroxide CAS No.21041-93-0,fairsky

Cobalt Hydroxide details Product Details

Cobalt Hydroxide Properties Properties

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.

Cobalt Hydroxide Application Application

Raw materials for cobalt salt manufacture, drier agent of paint and varnish, as well as catalyst for hydrogen peroxide decomposition.

Cobalt Hydroxide Storage Storage

Store at a ventilating and dry place, prevent damp and rain.

Cobalt Hydroxide Packing Packing

25kg net, Paper/PE complex bags with double PE inners.

Cobalt Hydroxide FAQ Cobalt Hydroxide FAQ

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.

Talk to Our Specialists

  • Quotation
  • Technical Documentation (TDS)
  • Sample Request
  • Feedback / Suggestions

Related Blog

Jun.01,2026

Why Cobalt Hydroxide Is Preferred for Paint Drier Production

Cobalt hydroxide (Co(OH)₂) is a light pink powder with a theoretical cobalt content of approximately 63.4%. It is insoluble in water, stable under alkaline conditions, and readily oxidized when exposed to air. Due to its high cobalt content and clean reaction characteristics, cobalt hydroxide is widely used in battery materials, catalysts, pigments, and cobalt-based paint driers.
Learn More >

May.18,2026

Cobalt Hydroxide: Applications in Paint Driers, Catalysts, and Chemical Processing

Cobalt Hydroxide is widely used in paint driers, cobalt salt production, catalysts, and battery-related materials. In practical applications, the material is valued not only for its cobalt content, but also for its reaction behavior during chemical processing. Compared with other cobalt compounds, Cobalt Hydroxide offers advantages in acid neutralization, impurity control, and compatibility with organic systems, making it commonly used in coating and chemical industries. The material is also frequently used together with Zirconium Carbonate and 2-Ethylhexanoic Acid in paint drier production systems.
Learn More >