Sodium Metasilicate Penta (Metso)

odium Metasilicate Pentahydrate (Metso)

Sodium Metasilicate Pentahydrate, commonly referred to as Metso, is a versatile, water-soluble silicate compound. It is widely used in industrial, commercial, and household applications due to its excellent cleaning, emulsifying, buffering, and corrosion-inhibiting properties.

Key Properties:

Chemical Formula:

• Na2SiO3⋅5H2O\text{Na}_2\text{SiO}_3 \cdot 5\text{H}_2\text{O}Na2​SiO3​⋅5H2​O

Molecular Weight:

• 212.14 g/mol

Physical Appearance:

• White crystalline or granular powder.

Solubility:

• Highly soluble in water, forming an alkaline solution.

pH (1% Solution):

• Approximately 12.5, making it highly alkaline.

Melting Point:

• Decomposes at high temperatures.

Applications:

1. Detergents and Cleaning Agents:

• Acts as a builder in laundry detergents.
• Improves cleaning performance by softening water and emulsifying oils and grease.

2. Industrial Cleaners:

• Used in degreasers, metal cleaners, and boiler compounds.
• Effective at removing oils, grease, and heavy soil deposits.

3. Corrosion Inhibitor:

• Provides corrosion protection for metals, making it suitable for industrial cleaning solutions.

4. Water Treatment:

• Used in water treatment processes to prevent scale formation.

5. Adhesives and Sealants:

• Enhances adhesion and performance in construction materials.

6. Pulp and Paper Industry:

• Used in bleaching and de-inking processes.

7. Textiles:

• Acts as a stabilizer in textile processing.

Advantages:

Alkaline Buffering:

• Maintains stable alkaline conditions, crucial for cleaning and industrial applications.

Non-Corrosive in Diluted Form:

• Safe for most materials when used in recommended concentrations.

Water Softening:

• Chelates calcium and magnesium ions, preventing soap scum and scale buildup.

Eco-Friendly Alternative:

• Can replace phosphate-based builders in detergents.

Handling and Safety:

1. Precautions:

• Use personal protective equipment (gloves, goggles, and masks) to avoid skin, eye, or respiratory irritation.
• Avoid direct inhalation of dust or contact with concentrated solutions.

2. Storage:

• Store in a cool, dry place in sealed containers to prevent moisture absorption and caking.
• Keep away from acids to avoid hazardous reactions.

3. Emergency Measures:

• Skin Contact: Rinse with plenty of water.
• Eye Contact: Flush eyes with water for at least 15 minutes and seek medical attention.
• Inhalation: Move to fresh air and consult a doctor if symptoms persist.

Preparation of Solutions:

For Cleaning Applications:

1. Dissolve Sodium Metasilicate Pentahydrate in water at the desired concentration.
   • Example: For a 5% cleaning solution, dissolve 50 grams of Metso in 1 liter of water.
2. Mix until fully dissolved. The solution will appear clear and alkaline.

Chemical Reactions:

1. With Acids:

• Reacts with acids to form silicic acid and release heat: Na2SiO3+2HCl→H2SiO3+2NaCl\text{Na}_2\text{SiO}_3 + 2\text{HCl} \rightarrow \text{H}_2\text{SiO}_3 + 2\text{NaCl}Na2​SiO3​+2HCl→H2​SiO3​+2NaCl

2. In Water:

• Hydrolyzes to form a silicate solution, which stabilizes emulsions and suspensions.

3. With Hard Water Ions:

• Binds calcium and magnesium ions, preventing scale and enhancing cleaning efficiency.

Packaging:

• Available in bags, typically ranging from 25 kg to 1000 kg (bulk).
• Ensure bags are moisture-resistant and properly labeled.

Environmental Impact:

• Biodegradable and non-toxic in diluted forms.
• Avoid releasing large amounts into waterways, as it can affect pH levels and aquatic life.

If you need formulation examples or specific use-case guidelines for Sodium Metasilicate Pentahydrate, let me know!