How to Make Sodium Metabisulfite Solution

Materials Needed

  • Sodium metabisulfite powder (Na2S2O5)
  • Distilled water
  • Beaker or glass container
  • Stirring rod or spoon
  • Digital scale
  • Measuring cylinder
  • Protective gloves and goggles

Instructions

  1. Determine Concentration:
    Decide on your desired concentration. Commonly used strengths are 1% or 2% (w/v).
  2. Weigh Sodium Metabisulfite:
    For a 1% solution, weigh 10 grams of sodium metabisulfite for every 1 liter of water.
    For a 2% solution, weigh 20 grams for every 1 liter of water.
  3. Prepare Water:
    Measure the required volume of distilled water in the beaker.
  4. Dissolve the Powder:
    Add the sodium metabisulfite to the water slowly while stirring constantly until completely dissolved.
  5. Label and Store:
    Transfer the solution to a labeled container with the concentration and date. Store in a cool, dark place.

Safety Precautions

  • Always wear gloves and eye protection while handling chemicals.
  • Work in a well-ventilated area.
  • Avoid inhaling the dust or vapors.
  • Rinse skin immediately if contact occurs.

Notes

  • Sodium metabisulfite solution is best prepared fresh, as it may degrade over time.
  • Dispose of any unused solution following local regulations.