Copper(II) formate hydrate
Copper(II) formate hydrate (CAS: 133386-04-6) is a chemical compound featuring copper in its +2 oxidation state, combined with formate ions and water of hydration. Its molecular formula is (HCO2)2Cu · xH2O, with an anhydrous basis molecular weight of 153.58 g/mol. This blue-green crystalline solid serves as a useful precursor in materials science and as a reagent in various chemical synthesis applications.
- IUPAC
- Cupric formate hydrate,Formic acid copper(II) salt hydrate
- Synonyms
- Cupric formate hydrateFormic acid copper(II) salt hydrate

Materials Science Precursor
Copper(II) formate hydrate can be employed as a starting material for the synthesis of novel copper-containing materials and nanoparticles. Its controlled decomposition can yield specific copper structures.
Catalysis Research
As a copper salt, it may be investigated for catalytic properties in organic reactions. Copper compounds are known to catalyse a range of transformations in academic and industrial research.
Chemical Synthesis
It can serve as a source of copper ions for various chemical reactions and preparations in laboratory settings. Its hydrate form can influence reaction kinetics and solubility.
| Molecular weight | 153.58 (anhydrous basis) |
|---|---|
| Linear formula | (HCO2)2Cu · xH2O |
| Assay | 97% |
| Form | powder |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Copper(II) formate hydrate used for?
+
Copper(II) formate hydrate is used as a precursor in materials science for the synthesis of copper-containing materials and in catalysis research. It also functions as a source of copper ions in general chemical synthesis.
What is the CAS number and formula for Copper(II) formate hydrate?
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The CAS number is 133386-04-6. The linear formula is (HCO2)2Cu · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Copper(II) formate hydrate with an assay of 97%. This is typically considered a technical or research grade, and TSS does not represent it as USP, BP, or EP grade.
How should Copper(II) formate hydrate be handled safely?
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Copper(II) formate hydrate is classified as a Warning. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). When handling, use a dust mask type N95 (US), wear eyeshields, and gloves. Avoid breathing dust. Ensure adequate ventilation.
How is Copper(II) formate hydrate shipped and exported?
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Tech Serve Solutions, a specialist global supplier and exporter since 1998, ships and exports Copper(II) formate hydrate in compliance with all relevant international regulations for chemical transport.
How can I request a quote or sample?
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To request a quote or obtain a sample of Copper(II) formate hydrate, please contact the Tech Serve Solutions sales team through our website or directly via email/phone.
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