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Specifications
| Appearance | Pink crystal with hygroscopicity |
| Assay (MnCl2, on dry basis) | 98.0%–101.0% |
| Solubility | Highly soluble in water |
| Identification (1) Chemical reaction | Should show a positive reaction |
| Identification (2) Chemical reaction | Should show a positive reaction |
| Acidity | 3.5–6.0 |
| Color and Clarity of Solution | Clear and colorless |
| Sulfate | Compared to the control solution made from 1.0 ml of standard potassium sulfate solution, should not be more concentrated (0.005%) |
| Ferric salt | Compared with the control solution made of 1.0 ml standard iron solution, should not be deeper (0.0005%) |
| Zinc salt | No turbidity should occur within 5 minutes |
| Insoluble substances in water | 0.5 mg (0.005%) max |
| Non-sludging to ammonium sulfide | 2.0 mg (0.2%) max |
| Loss on drying | 36.0%–38.5% |
| Bacterial endotoxin | The amount of endotoxin in 1 mg of manganese chloride should be <0.05 EU |
| Total aerobic bacteria | 1000 cfu/g max |
| Molds and yeast | 100 cfu/g max |
| Escherichia coli (1g) | No detection |
Applications
Manganese chloride tetrahydrate (CAS 13446-34-9) is an important inorganic salt used across chemical, industrial, and research applications. It serves as a source of manganese ions in the production of manganese-based catalysts, fertilizers, and specialty chemicals. In organic synthesis, it is employed as a catalyst or co-catalyst in oxidation reactions, polymerization processes, and cross-coupling reactions. It is also widely used in the preparation of manganese salts, such as manganese carbonate and manganese oxide, which find applications in ceramics, pigments, and batteries. In biological and biochemical research, manganese chloride tetrahydrate is used as a reagent in enzyme studies, trace metal supplementation in cell culture media, and studies of manganese-dependent processes.
Benefits
The benefits of manganese chloride tetrahydrate come from its high solubility in water, chemical stability, and reliability as a manganese source. Its tetrahydrate form is easier to handle and measure, providing reproducible dosing in chemical reactions and formulations. The compound is highly soluble, ensuring rapid and uniform distribution in solutions for catalysis, supplementation, or material synthesis. Its compatibility with a wide range of reaction conditions and reagents enables efficient production of manganese-containing compounds. Additionally, it is cost-effective, readily available, and provides a controlled source of manganese ions, making it suitable for both laboratory research and industrial processes.
Conclusion
Manganese chloride tetrahydrate is a versatile inorganic salt used in catalysis, material synthesis, fertilizers, and biochemical research. Its solubility, stability, and reliability as a manganese source make it essential for producing manganese-based compounds and supporting chemical and biological processes. By enabling efficient reactions, uniform dosing, and high-quality results, manganese chloride tetrahydrate remains a key material in modern chemical, industrial, and research applications.
