Copper (II) Chloride Dihydrate (CuCl₂·2H₂O)
Copper chloride dihydrate (copper (II) chloride dihydrate, CuCl₂·2H₂O) is a blue-green crystalline inorganic copper salt that dissolves readily in water. Obafer Kimya supplies it at 98% purity in bulk for plant nutrition and plant protection formulations and for industrial use.
| Property | Value |
|---|---|
| Appearance | Green-blue crystal |
| CAS No | 10125-13-0 |
| Molecular Formula | CuCl₂·2H₂O |
| Chemical Name | Copper (II) Chloride Dihydrate |
| Purity | 98% |
| Copper (Cu) Content | 36% |
| Chlorine (Cl) Content | 52% |
| Water Solubility | 75.7 g / 100 mL (25 °C) |
| Storage Condition | Store in a cool, moisture-free and well-ventilated place, in closed packaging. |
What Is Copper Chloride Dihydrate?
Copper chloride is sold commercially mainly as copper (II) chloride, in anhydrous and dihydrate forms. The dihydrate form (CuCl₂·2H₂O) is preferred in industry because it is stable and easy to handle. It is valued as a copper source and for its catalytic properties.
Chemical and Physical Properties
- Chemical formula: CuCl₂·2H₂O (dihydrate form)
- Molecular weight: approx. 170.48 g/mol (dihydrate), 134.45 g/mol (anhydrous)
- Appearance: blue-green crystals
- Solubility: highly soluble in water
- Character: catalytic and oxidizing
The compound is hygroscopic and absorbs moisture from the air. It decomposes on heating and can be corrosive under unsuitable conditions. Detailed physicochemical data is available in the PubChem database.
Usage Areas
Plant Nutrition and Protection Products
Copper chloride dihydrate is used as a fast-dissolving copper source in the formulation of liquid plant nutrition products. Copper is a micronutrient the plant needs for photosynthesis and enzyme activity. It is also used as a copper source in SL fungicide formulations and as an intermediate in the production of copper fungicides such as copper oxychloride. For formulations that need chelated copper see copper EDTA, and for sulphate-based formulas see copper sulphate pentahydrate. Contact us for technical support on using copper chloride in plant nutrition and protection formulations.
Chemistry and Laboratory Applications
In laboratories copper chloride dihydrate is used as a catalyst and as a reagent in various organic and inorganic reactions. In analytical chemistry it serves as a source of copper ions.
Metal Processing and Surface Treatment
In metal processing it is used for surface cleaning, etching and pre-coating preparation. It is a common component of etching solutions in printed circuit board (PCB) production.
Glass, Ceramics, Pigments and Other Industries
It is used as a colorant and additive in glass, ceramics and enamel, and gives blue-green tones in pigment production. Other industrial uses include textile printing and dyeing, coatings, paints and surface treatment chemicals. Another raw material in our range for agricultural fungicide production is phosphorous acid.
Is Copper Chloride Hazardous?
Used correctly, it is considered safe. Skin contact may cause irritation and eye contact may cause serious irritation. Inhalation may irritate the respiratory tract, and swallowing it can be toxic. Wear protective gloves, goggles and a mask during handling and follow workplace safety instructions.
Storage and Transport
Store in a dry, cool place, away from moisture and direct sunlight, in airtight packaging made of chemically resistant material. This keeps the product stable and safe.
Frequently Asked Questions
What is copper chloride dihydrate used for?
It is used as a catalyst and copper ion source in the chemical industry, as an etching solution in metal processing and PCB production, and as a colorant in glass, ceramics and pigments. In agriculture it is a copper source for plant nutrition products and fungicide production.
What does the formula CuCl₂·2H₂O mean?
It describes the dihydrate structure, in which each copper (II) chloride molecule is bound to two water molecules. This form is more stable and easier to handle than the anhydrous form. Its molecular weight is about 170.48 g/mol.
What is the difference between anhydrous and dihydrate copper chloride?
The anhydrous form is yellowish-brown and strongly hygroscopic. The dihydrate form is a green-blue crystal with a stable water content, which makes storage and weighing easier. Industry mostly uses the dihydrate.
How is it used in PCB production?
It is a main component of etching solutions that remove copper from circuit board surfaces in a controlled way. Its high solubility and oxidizing character let it dissolve copper efficiently.
How is it stored and packaged?
It should be kept in a cool, well-ventilated, moisture-free place in closed packaging. Obafer Kimya supplies the 98% product in bulk, in packaging suitable for industrial use. Contact us for packaging options and supply terms.
Copper Chloride Dihydrate from Obafer Kimya
Purity, certificates of analysis and supplier reliability matter when buying copper chloride dihydrate. Obafer Kimya supplies it at wholesale for agricultural and industrial formulations, with technical support. Contact us for details.
