caustic soda peals
Caustic Soda Pearls – also known as sodium hydroxide pearls – are a solid form of caustic soda (NaOH), appearing as small, white, spherical granules. This form is particularly favored for its high purity, ease of handling, and efficient storage.
Physical and Chemical Properties
Caustic soda pearls are essentially spherical granules of sodium hydroxide. Their size often ranges between 0.5 mm and 2.0 mm in diameter, making them easy to store, handle, and measure out in various processes. As a deliquescent substance, caustic soda absorbs moisture from the environment and tends to dissolve if exposed to air for too long. This characteristic necessitates careful packaging and handling to maintain product integrity and safety.
Below is a table summarizing the typical specifications of caustic soda pearls provided by many reputable suppliers, including Zumrut kimya. These values may vary slightly depending on the manufacturer’s production processes and raw material sources, but they represent standard industry benchmarks:
| Parameter | Specification |
| Size | 0.50 mm – 2.00 mm dia. |
| Appearance | White deliquescent spheres |
| NaOH | 99% minimum |
| NaCl | 0.046% wt. (maximum) |
| Na₂CO₃ | 0.94% wt. (maximum) |
| Na₂SO₄ | 0.038% wt. (maximum) |
| Fe | 5 wt. ppm (maximum) |
| Ni pick-up | 3 wt. ppm (maximum) |
Key Applications of Caustic Soda Pearls
1. Chemical Manufacturing
- Used as a strong alkali in producing a wide range of chemicals such as sodium hypochlorite, sodium phosphate, and sodium sulfide.
- Acts as a neutralizing and pH control agent in chemical reactions.
2. Soap and Detergent Industry
- Essential raw material in soap making (saponification process) — converts fats and oils into soap and glycerin.
- Used in detergent formulations to improve cleaning efficiency and remove fatty residues.
3. Pulp and Paper Industry
- Applied in the pulping and bleaching of wood to manufacture high-quality paper.
- Helps remove lignin and impurities, enhancing paper brightness and strength.
4. Petroleum and Refining
- Used in oil refining for the removal of sulfuric and acidic contaminants.
- Plays a role in biodiesel production as a catalyst in the transesterification process.
5. Food and Beverage Industry
- Employed in food processing for washing fruits and vegetables, peeling, and neutralizing acidic by-products.
- Used in the production of cocoa, chocolate, and soft drinks (under strict quality grades).
6. Textile Industry
- Used in mercerization of cotton, improving luster, dye absorption, and fabric strength.
- Helps in scouring and bleaching of fabrics.
7. Water Treatment
- Applied to adjust pH and neutralize acidic waste streams.
- Helps in removing heavy metals and impurities from water and wastewater.
8. Alumina and Metallurgical Industry
- Key reagent in alumina extraction from bauxite ore.
- Used in metal cleaning, electroplating, and etching processes.
9. Pharmaceuticals
- Serves as a reactant in the production of various medicines and intermediates.
- Used for pH control and purification during synthesis stages.
Packing of Caustic Soda Pearls
- 25kg bag in Jumbo bag 1250 kg
- Jumbo bag 1000 kg
Technical Data Sheet of Caustic Soda Pearls
| Property | Value | Unit |
| MeltingPoint: | 320-325 | ºC |
| BoilingPoint: | 1385-1390 | ºC |
| Densityat20ºC: | 2.13 | g/cm3 |
| SolutionRate:(100gin100mlwater at25ºC): | 22 | s |
| HeatCapacityat25ºC: | 2.01 | J/g.K |
| HeatofFusionat15ºC: | 167.5 | J/g |
| StandardHeat ofFormationat25ºC: | 10.67 | kJ/g |
| Specifications | ||
| Item | Value | Unit |
| Purity: | 99.0 Min | % |
| Sodium Carbonate (Na2CO3): | 0.8 Max | % |
| Sodium Chloride (NaCl): | 0.05 Max | % |
| Fe2 O3: | 50 Max | PPM |
Technical Data Sheet of Caustic Soda Preals
