Magnesium chloride hexahydrate for analysis. Lab Grade Magnesium Chloride 500 gram pack is available in Bangladesh. Magnesium chloride hexahydrate (MgCl₂·6H₂O) is often used in analytical chemistry for various applications.
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Chemical Properties Magnesium chloride hexahydrate
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- Chemical Formula: MgCl₂·6H₂O \n
- Molecular Weight: 203.3 g/mol \n
- Solubility: Highly soluble in water, with a solubility of about 54.3 g per 100 mL at room temperature. \n
- Melting Point: Decomposes at high temperatures (around 150 °C) rather than melting. \n
Physical Properties of (MgCl₂·6H₂O)
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- Appearance: White, crystalline solid. \n
- Hygroscopic Nature: Absorbs moisture from the air, which can impact the concentration in solutions and should be accounted for in analyses. \n
Applications in Analytical Chemistry
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- Titration:
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- Complexometric Titration: Used for determining concentrations of metal ions (like calcium and magnesium) using chelating agents (e.g., EDTA). \n
- Procedure: Sample solution is titrated with a standard solution of EDTA, using a suitable indicator (like Eriochrome Black T) to indicate endpoint. \n
\n - Preparation of Buffer Solutions:
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- Magnesium chloride can help maintain pH in biological and chemical reactions. \n
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- Acts as a source of magnesium ions in biochemical reactions, especially in enzyme assays and mineral studies. \n
\n - In Synthesis:
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- Used in the preparation of other magnesium compounds and as a catalyst in some reactions. \n
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Analytical Techniques
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- Gravimetric Analysis:
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- Procedure: Precipitation of magnesium ions as magnesium ammonium phosphate (MAP) or magnesium hydroxide can allow quantification by mass. \n
- Advantage: High accuracy and precision for determining magnesium content. \n
\n - Spectrophotometry:
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- Complex Formation: Magnesium ions can form colored complexes with certain ligands, allowing for UV-Vis spectrophotometric determination. \n
- Method: Measure the absorbance at specific wavelengths related to the complex formed. \n
\n - Ion Chromatography:
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- Useful for separating magnesium ions from other cations and anions in a mixture. \n
- Mobile Phase: Usually involves a buffered solution to maintain pH. \n
\n - Atomic Absorption Spectroscopy (AAS):
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- Suitable for measuring low concentrations of magnesium in various samples (like water, biological samples, etc.). \n
- Sample Preparation: Often requires dilution or specific matrix modification for accurate measurement. \n
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Safety and Handling
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- Personal Protective Equipment (PPE): Use gloves, safety goggles, and lab coats to avoid skin and eye irritation. \n
- Storage: Keep in a tightly sealed container in a cool, dry place to minimize moisture absorption. \n
- Disposal: Follow local regulations for chemical disposal, as magnesium chloride can contribute to environmental salinity if not disposed of properly. \n
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\nNote: Here displayed product picture is not a real picture. The real picture maybe some changed. -
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- Magnesium Chloride Hexahydrate \n
- Pack Size: 500gm \n
- Brand: Merck \n
- Made in India \n
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