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Caustic Soda Flakes (99%)
Characteristics:
Pure white color, thin and semi-transparent flakes.
Packaging:
● Net 25kg 3-layer bags, 25MT each 20’FCL.
● If palletized 25kg bags, max 22MT each 20’FCL.
● 1000kg jumbo bags are available, max 20MT each 20’FCL.
| Composition | Limit |
| NaOH | ≥99% |
| Na2CO3 | ≤0.4% |
| NaCl | ≤0.015% |
| Fe2O3 | ≤0.004% |
Caustic soda, or sodium hydroxide, is a highly versatile and widely used chemical compound. In its flake form, caustic soda plays a crucial role in various industrial processes. This article explores the properties, production methods, and applications of caustic soda flakes.
Properties:
Chemical Composition:Caustic soda is an inorganic compound with the chemical formula NaOH. In its flake form, it is characterized by a solid, white crystalline structure.
Hygroscopic Nature:Caustic soda flakes are hygroscopic, meaning they readily absorb moisture from the air. This property can affect handling and storage requirements.
Production:
Diaphragm Cell Process:One common method for producing caustic soda involves the diaphragm cell process. This process uses a diaphragm to separate the chlorine and hydrogen gas produced during electrolysis, leaving behind sodium hydroxide.
Membrane Cell Process:The membrane cell process is another electrolytic method for caustic soda production. It employs ion-exchange membranes to separate the various products of electrolysis.
Mercury Cell Process (Less Common):The mercury cell process, while less common due to environmental concerns, is an older method that involves the use of mercury as a cathode material.
Applications:
Chemical Manufacturing:Caustic soda flakes are a fundamental ingredient in the production of various chemicals, including soaps, detergents, and organic chemicals.
Alumina Refining:In the production of alumina from bauxite ore, caustic soda is used to dissolve and extract alumina from the ore.
Pulp and Paper Industry:Caustic soda is employed in the pulping process to break down lignin and separate fibers during the production of paper and cardboard.
Textile Industry:In the textile industry, caustic soda is used in processes such as mercerization, which imparts strength and sheen to fabrics.
Water Treatment:Caustic soda is used to adjust pH levels in water treatment processes, aiding in the removal of impurities.