Cobalt(II) oxalate dihydrate
Cobalt(II) oxalate dihydrate (CAS: 5965-38-8; Formula: CoC2O4 · 2H2O) is a crystalline solid with a molecular weight of 182.98 g/mol. This cobalt salt serves as a valuable precursor in various chemical synthesis processes. It is particularly noted for its applications in materials science and as a reagent in research laboratories, contributing to advancements in metallurgy and ceramic sciences.

Precursor in Materials Synthesis
Utilised as a starting material for the preparation of advanced cobalt-containing materials, including oxides and catalysts. Its controlled decomposition yields specific material properties.
Research and Development
Employed in academic and industrial research settings for fundamental studies in coordination chemistry and solid-state physics. Supports investigations into magnetic and catalytic properties.
Pigment and Ceramic Applications
Can be used in the formulation of specialised pigments and glazes for ceramics, providing distinctive colouration. Its specific cobalt content is crucial for achieving desired hues.
| Molecular weight | 182.98 |
|---|---|
| Linear formula | CoC2O4 · 2H2O |
| Form | powder |
| Melting point | 230 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 21/22 |
| Safety statements (S) | 24/25 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Cobalt(II) oxalate dihydrate used for?
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Cobalt(II) oxalate dihydrate is used as a precursor in materials synthesis, in research and development, and potentially in pigment and ceramic applications. It serves as a source of cobalt for creating various cobalt-containing compounds and materials.
What are the CAS number and chemical formula for Cobalt(II) oxalate dihydrate?
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The CAS number is 5965-38-8 and the chemical formula is CoC2O4 · 2H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cobalt(II) oxalate dihydrate in a technical or research grade. We do not represent this product as USP, BP, or EP grade. Please refer to the Certificate of Analysis for specific purity details.
How should Cobalt(II) oxalate dihydrate be handled safely?
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Cobalt(II) oxalate dihydrate is harmful if swallowed and harmful in contact with skin (H302-H312). Handle with appropriate personal protective equipment including Eyeshields, Gloves, and a dust mask type N95 (US). Avoid dust formation and inhalation. Ensure adequate ventilation.
How is Cobalt(II) oxalate dihydrate packed, shipped, and exported?
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Cobalt(II) oxalate dihydrate is carefully packaged to maintain its integrity during transit. Tech Serve Solutions is experienced in exporting chemicals globally, adhering to all relevant international shipping regulations for hazardous materials.
How can I request a sample or quote for Cobalt(II) oxalate dihydrate?
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To request a sample or a quotation, please contact our sales team via the website or direct email, providing your specific requirements and shipping details.
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