Rubidium chloride Stock Solution

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Stock Solution Preparation Guide – Rubidium Chloride (RbCl)

Rubidium chloride (RbCl) is a white crystalline inorganic salt that dissolves readily in water and dissociates into rubidium (Rb⁺) and chloride (Cl⁻) ions. It is used in analytical chemistry, research, and specialized biochemical applications.

Objective

Preparation of 100 mL of 0.5 M Rubidium chloride stock solution.

Composition

• 0.5 M Rubidium chloride (RbCl) in aqueous solution

Required Materials

• Rubidium chloride (RbCl)
• Deionized / distilled / Milli-Q water
• Measuring cylinder or volumetric flask (100 mL)
• Balance for solid weighing
• Magnetic stirrer or manual mixing tool

Procedure

Wear appropriate personal protective equipment and comply with laboratory safety protocols.

• Step 1
  Calculate the required mass for a 0.5 M solution: 0.5 mol/L × 0.1 L × 120.92 g/mol = 6.046 g.
• Step 2
  Accurately weigh 6.05 g RbCl and transfer it into a beaker. Add ~80 mL deionized water and stir until completely dissolved.
• Step 3
  Transfer the solution to a 100 mL volumetric flask and adjust the final volume to 100 mL with deionized water. Mix thoroughly.

Sterilization and Storage

If a sterile solution is required, filter through a 0.22 µm membrane under aseptic conditions. Store the completed stock solution at 4 °C for short-term use. For long-term storage, aliquot and freeze at −20 °C to reduce contamination.

Available Reagents