Understanding Cobalt Acetate: Properties and Structural Characteristics
Cobalt acetate, typically supplied as the tetrahydrate (Co(CH3COO)2·4H2O), is a purplish-red crystalline solid known for its high solubility and good stability. Its relative density is approximately 1.72.
Key Chemical and Physical Properties
For quick reference, here are the essential specifications of Cobalt Acetate Tetrahydrate:
Property | Value/Description |
Chemical Formula | Co(CH3COO)2·4H2O |
CAS Number | 6147-53-1 |
Molar Mass | 249.08 g/mol |
Appearance | Purplish-Red Crystals |
Solubility | Highly soluble in water and ethanol |



Thermal Decomposition and Chemical Reactivity
The compound gradually begins to lose its water of crystallization when heated above approximately 100℃ to 140℃. Further heating, typically around 298℃ and beyond, causes it to decompose, eventually forming highly active cobalt oxides, such as CoO or Co3O4.
In its chemical reactions, cobalt acetate primarily exhibits the characteristics of the Cobalt (II) ion (Co2+). This ability to easily form active cobalt oxides makes it an ideal precursor for various applications.
Note on Storage: Cobalt acetate readily absorbs moisture in humid environments and may clump (deliquesce). It may also slightly effloresce in very dry air. Therefore, careful handling and avoiding contact with moisture are crucial during storage and transportation.
Major Applications of High Purity Cobalt Acetate
Cobalt acetate is a versatile cobalt salt used across several high-tech and traditional industries due to its purity and reactivity.
1. New Energy Materials: Lithium-Ion Battery Precursors
In the cutting-edge field of new energy, high purity cobalt acetate is a critical raw material for the synthesis of cobalt-based electrode materials (such as LiCoO2 and NMC precursors) used in lithium-ion batteries and other novel energy storage devices.
Materials synthesized from cobalt acetate typically exhibit:
High Specific Capacity: Essential for long-lasting batteries.
Stable Cycle Life: Ensuring durability and performance over time.
Its controlled thermal decomposition pathway is key to producing highly uniform and active cobalt oxide intermediates required for high-performance batteries.
2. Catalysis in Organic Synthesis
Cobalt acetate is widely utilized as a highly effective catalyst in various organic synthesis reactions. It commonly facilitates:
l Oxidation Reactions: For the synthesis of high-value organic acids (e.g., acetic acid production).
l Synthesis of Ketones and Alcohols: Acting as a reaction promoter in specific organic transformations.
3. Pigments for Ceramics and Glass Industries
This compound serves as an important raw material for the preparation of cobalt-based pigments. It is highly valued in the ceramics and glass industries because its high-temperature resistance allows it to produce stable, deep blue or green colorants in glazes and glass melts, ensuring excellent color effects even under extreme firing conditions.
FAIRSKY Quality, Storage, and Supply Information
As a nickel-cobalt chemical manufacturer with years of experience, FAIRSKY strictly controls the quality and continuously optimizes production processes to guarantee a stable and reliable supply of high-purity cobalt acetate to global customers.
l Storage: Store in a cool, dry, and well-ventilated place. Ensure the package remains intact to prevent moisture absorption and caking.
l Packing: 25kg bag is standard. (Customized packaging options are also available upon request to meet specific client needs.)
Experience FAIRSKY Quality: Request Your Free Sample Today! In addition to conventional cobalt acetate, FAIRSKY offers a variety of high-purity, customizable cobalt salt products. Contact our professional team now to request a free sample and receive detailed technical support and specifications for your specific application. |












