Caustic Soda Flakes 98±1%


Caustic Soda Flakes 98±1%

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Caustic Soda flakes 99±0.5%

Caustic Soda Iran

Chemical Formula of Caustic soda flakes: NaOH

Other names: Sodium hydroxide | White caustic | Sodium Oxidanide | Sodium hydrate | Soda lye | Aetznatron

Appearance: White flakes

Other uses of caustic soda

  1. Food Preparation, Milk Processing Industry, Canning Beverage, Sugar, Oil
  2. Metal industry and manufacture of glass, zinc and electroplating
  3. Battery industry and neutralize the acid and battery
  4. The Pharmaceutical industry. Alcohol and cosmetics
  5. Industry consuming fatty
  6. leather and textile industry and Dyeing industry
  7. Oil, gas and petrochemical industry
  8. Cardboard and paper industry
  9. Leaf profit (caustic soda) pack
  10. Drilling Mud
  11. Detergent and Soap Making
  12. Biodiesel
  13. Aluminum etching
  14. Domestic uses
  15. Tissue digestion
  16. Delignification of cellulosic materials
  17. Pulp and paper

Grade: Food Grade | Industrial grade

Brands: Kimiasood | Oxinsood | Parsiansood | No Name

Packaging Caustic soda: 25 kgs 2 layer laminate PP (1 MT Big Bag or Pallet with cover is optional)

Caustic soda Prices: Negotiable, depending on the amount of the order

Payment terms: T/T 100% cash in advance

Min order of Caustic soda: 1 * 20 ft FCL

Delivery time: Within 5-10 days after we receive the payment

Origin: Iran


Caustic Soda Flake: An Essential Chemical with Multiple Uses

What are caustic soda flakes? In this article, learn everything including the properties, characteristics, uses of this chemical and get to know the market of buying and selling Caustic Soda flakes.

An introduction to the alkaline composition caustic soda flakes (solid sodium hydroxide)

Caustic Soda flakes or solid pieces of caustic soda (sodium hydroxide) is a common and well-known alkaline compound. This solid substance is also sold in the market under the common name of

sodium hydroxide or caustic soda.

Solid sodium hydroxide (NaOH) is in fact a solid mass in a shell or flakes state. This combination is matte white or milky.

Caustic soda flakes is soluble in water and alcohol and is highly absorbent. This substance is classified in the group of corrosive chemicals. flakes sodium hydroxide is obtained by evaporation of liquid caustic soda.

If you come across the following common names in the caustic soda flakes market, it means the same alkaline substance:
solid sodium hydroxide; sodium hydroxide; caustic soda; Caustic soda NaOH, solid NaOH; caustic soda NaOH; Sodium hydroxide (Natrium hydroxide); sodium hydrate; caustic soda; caustic soda 98%

Solid caustic soda is used in the processes of synthesis of organic compounds, refining of petroleum products, textile industries in silk production, and fabric bleaching, in paper making, soap making, aluminum metal production, sodium preparation, glass making industries, etc.

A brief look at the history of caustic soda flakes

Sodium hydroxide (caustic soda flakes) was first prepared by soap makers. This method was implemented based on the soap preparation instructions published in a book in Arabic.

This book was compiled by the king of Yemen named “Muzaffar Yusuf ibn Umar ibn Ali ibn Rasool”. This method is considered as one of the industrial inventions of that period.
In this method, it was said that water should be passed through the alkaline solution; Therefore, the final product will be sodium hydroxide compound. Alkaline composition in this method, impure sodium carbonate and quicklime or calcium oxide were selected.

It is interesting that most of the soap making industries in European countries based the product preparation method on these innovations and followed it.

In 1791, French chemist and surgeon Nicolas LeBlanc (1742-1806) invented a process for the mass production of sodium carbonate, natural “soda ash” (= impure sodium carbonate obtained from the ashes of sodium-rich plants).

This new method replaced the previous unconventional method. However, in the 20th century, the main method of producing solid sodium hydroxide or caustic soda flakes is the electrolysis of sodium chloride. We will talk about this in the next section.

Uses of caustic soda flakes

  1. Soap and Detergent Industry: Caustic soda is an essential ingredient in the production of soap and detergents. It is used to neutralize the fatty acids present in oils and fats to form soap.
  2. Pulp and Paper Industry: Caustic soda is used in the manufacture of paper and pulp as a bleaching agent. It helps to brighten the paper and remove impurities.
  3. Water Treatment: Caustic soda is used in water treatment plants to adjust the pH levels of water. It helps to remove impurities and pollutants, making the water safe for consumption.
  4. Textile Industry: Caustic soda is used in the production of textiles to remove impurities and improve the quality of the fabric. It is also used as a degreasing agent.
  5. Chemical Industry: Caustic soda is used as a raw material in the production of other chemicals, such as chlorine and sodium metal.
  6. Drilling Fluid: Caustic soda is used in oil and gas drilling operations to maintain the pH levels of drilling fluids. This helps to prevent corrosion of the drilling equipment.
  7. Cleaning and Degreasing: Caustic soda is used as a cleaning agent for various surfaces, such as ovens, drains, and metal surfaces. It is also used as a degreaser for removing grease and oil from metal parts.

Caustic soda flakes production method

Solid caustic soda or soda flakes (sodium hydroxide flake) is actually produced from liquid caustic soda. In this method, membrane cell technology is used. The solid caustic soda that is prepared in this way has the best quality and does not contain pollutants such as heavy metals.

The product of this process is very absorbent and soluble in water and is used in many different industries.

The purity of this product is at least 97%. Solid sodium hydroxide is generally packed in polyethylene or polypropylene (PP/PE) bags with a standard weight of 25 kg.

We will explain more about the packaging of this product in the next sections.

Also, sodium hydroxide (NaOH) is an inorganic acid (mineral) compound. This composition is prepared based on a solid metal which is sodium. Soda is solid, white and very caustic, and is included among alkaline salts.

Solid caustic soda is usually available in the form of wide balls, flakes, granules and standard ready solutions with a concentration of 30% and 50% in different quantities.

Sodium hydroxide forms a saturated solution with a concentration of approximately 50% (by weight) with water. Sodium hydroxide is soluble in water, ethanol and methanol. This alkaline material easily absorbs moisture and carbon dioxide in the air.

Almost the largest volume of caustic soda flakes or caustic soda is produced through electrolysis of sodium chloride solution.

In the electrolysis method, one of three types of mercury electrochemical cells, diaphragm cells and membrane cells are used. The electrolysis process generally produces 2.25 tons of 50% caustic soda per ton of chlorine consumed.

The raw material for the production of solid caustic soda is common salt (sodium chloride), which is usually found in the form of underground sediments and is driven to the surface of the earth as a solution in a water source through high-pressure pumping.

Sodium chloride solution is called salt, which is the primary feed for the production of caustic soda flakes.

In the following, in order to better understand what caustic soda is, the types of liquid caustic soda production methods that are necessary for the production of caustic soda flakes are listed separately.

  1. Production of caustic soda by mercury cell electrolysis method

In the traditional method, electrolysis is performed to produce solid caustic soda in mercury amalgam tube or diaphragm tube. The ion exchange membrane cell for performing electrolysis has better environmental and economic benefits.

In the United States, the main method of producing soda in electrolysis is through the diaphragm cell, while mercury and membrane cells are more commonly used in Europe. Due to environmental considerations and government decisions, mercury tubes gradually became obsolete.

In the mercury cell, sodium is discharged as sodium mercury amalgam ions and chloride ions are discharged as chlorine. The amalgam is transferred to a completely separate chamber where it reacts with water.

Finally, sodium hydroxide solution and hydrogen gas are produced.

  1. Production of caustic soda by cell diaphragm electrolysis method:

The diaphragm cell is usually made of asbestos. In this cell, a flow of salt water occurs from the anode to the cathode and separates the space of chlorine and hydrogen gas through a diaphragm.

By discharging hydrogen ions, hydroxide ions accumulate in the cathode compartment with dissolved sodium ions and produce sodium hydroxide (soda).

The return migration of hydroxide ions from the cathode to the anode is prevented by the liquid flow rate from one chamber to another.

  1. Production of soda flakes from membrane cell electrolysis method:

In the membrane process for soda flakes production, the ion exchange membrane acts as a barrier against gas and liquid flows, allowing only sodium ions to pass through both chambers.

Sodium ions pass through the membrane in hydrated form and sodium hydroxide is produced in the cathode where hydrogen is released.

Chlorine gas is released in the anode. The membrane in this method is a copolymer of tetrafluoroethylene or a similar fluorine monomer.

You can see a view of these reactions in the figure below:

A simple comparison between all three methods above in the production of caustic soda flakes

In the case that the cost of electricity consumption to produce caustic soda flakes is cheaper and a product with high concentration and purity is produced, mercury cells are cheaper than diaphragm cells; But mercury must be removed as waste water.

Diaphragm cells need a lot of heat energy to concentrate the soda solution. If they have a cheaper structure, they can be even cheaper than mercury cells.

The use of membrane cells for the production of caustic soda is growing due to lower initial capital, lower energy costs and the absence of environmental problems.

The product obtained by the membrane cell method has a higher purity. Membranes in this method can pass a different current in the solution and carry out the production process with a cheaper price of electricity consumption.

  1. A look at the chloralkali process to produce caustic soda flakes

Solid sodium hydroxide is industrially produced as a 50% solution by chemical changes in the chloralkali process. In this process, chlorine gas is also produced. Solid caustic soda is obtained by evaporating water from this solution.

Solid sodium hydroxide is chemical produced as a 50% solution by industrially, changes in the chloralkali process. In this process, chlorine gas is also produced. Solid caustic soda is obtained by evaporating water from this solution.

You can see the reaction of producing caustic soda with alkaline sodium carbonate solution in the following section (this method was used in the old days):

Ca(OH)2+Na2CO3 ” CaCO3+NaOH

The above process was replaced by the Solvay process in the late 19th century. The Solvay process, in turn, was replaced by the chloralkaline process; Something that is used in the industry today to produce caustic soda flakes.

What is the use of caustic soda flakes interest? An overview of the uses of caustic soda

Caustic soda or solid sodium hydroxide is a compound that is mostly used by industries and companies that produce chemicals.

Some of the most important applications of caustic soda flakes are introduced as follows:

  • Alundum recycling industries
  • Preparation of plastic coating
  • Preparation of soap and cleaners
  • Producing all manner of detergent
  • production of textile products
  • oil refining
  • Water and wastewater treatment- provision of sediment and corrosion inhibitors
  • Metal processing
  • Preparation of various types of glue
  • Production of chemical products
  • Preparation of chemicals that can be used in animal husbandry, plant protection and chemical fertilizers
  • Food industry
  • Application in the metallurgical industry to clean metals
  • Application in mining and drilling – metal extraction, oil and gas extraction
  • Application in paint and coating industries
  • Application in the paper making industry to prepare paper pulp
  • Application as industrial raw materials or transition compounds in chemical reactions
  • Preparation of bleaching and degreasing materials
  • As pH regulator in industries
  • Production of baking soda and sodium methoxide with for caustic soda flakes
  • Production of well opener solution
  • Use in leather and tanning industry
  • Use as a chromophores

Industrial applications of caustic soda flakes:

  • Sodium hydroxide is used in making sodium salts and detergents, adjusting pH and synthesizing organic compounds.
  • Sodium hydroxide is used to increase the alkalinity of the mixture or neutralize acids.
  • In the oil industry, sodium hydroxide is used as an additive in drilling mud to increase the alkalinity in the drilling mud systems, bentonite, increase its viscosity and neutralize any acid gas (such as hydrogen sulfide and carbon dioxide).
  • Caustic soda flakes a is used in crude oil refining to remove sulfur impurities.
  • Sodium hydroxide is used to make soap and detergent.

Solid caustic soda is used to make synthetic textile fibers (Rayon).

  • About 56% of sodium hydroxide produced is used for industrial purposes, of which 25% is used in the paper industry.
  • Caustic soda flakes is used in refining bauxite ore from which aluminum metal is extracted. This process is known as the Bayer process.
  • Solid soda is used in metal degreasing, oil refining, and making dyes and bleaching materials.
  • Solid soda is used in metal degreasing, oil clarify, and making dyes and bleaching materials.

Uses of caustic soda flakes in food:

Caustic soda flakes are used in food processing and preparation in the food industry. These applications of solid caustic soda include the following:

  • Washing fruits and vegetables in industry with caustic soda
  • Chocolate and cocoa production
  • Caramel color production
  • Cooking chicken
  • Soft drink processing
  • Thickening of ice cream texture
  • Processing and removing the bitterness of olives by increasing the caustic soda flakes
  • Preparation of some desserts and cake dough powder
  • Preparation of some canned goods

Caustic soda flakes safety data sheet and chemical considerations

caustic soda (msds)

As with other corrosive acids and alkalis, even the smallest drops of sodium hydroxide solution can easily hydrolyze the protein and lipid compounds of living tissue.

As a result, it causes chemical burns and may cause permanent blindness due to eye contact.

This solid substance, which is strongly alkaline, can also be corrosive in the presence of moisture such as water vapor.

Therefore, when working with this chemical or its solutions, you should always use protective equipment such as rubber gloves, safety clothing and eye protection (goggles).

First aid measures in case of skin contact with caustic soda solution include washing the contact area with plenty of water. Washing should continue for at least 10 to 15 minutes.

Caustic soda flakes packaging

Solid caustic soda is generally sold in 25 kg, 50 kg double wall polyethylene bags and 1-MT jumbo bag as secondary packaging, special containers with a maximum capacity of 1000 kg, 60 kg polyethylene drums. All packages are finally supplied as Shrink palette.

Shipping soda in bulk is also possible. These conditions are implemented for the export caustic soda flakes and transfer in ports and customs. The shelf life of the product is guaranteed for 2 years from the date of manufacture.

Conditions of storage and maintenance of caustic soda flakes in the warehouse

When using a large amount of sodium hydroxide composition, it is necessary to implement the correct storage and maintenance method.

This material should be stored in polyethylene tanks, tanks made of PVC, steel tanks (stainless steel) or fiberglass tanks with a protective cover.

The lids of all containers must be closed because any moisture is strongly absorbed by this compound. The shelf life of this product is 6 months.

The impurity of this material can be heavy metals, including iron, which causes its color to turn green. In edible grade, there should be little impurities and it should be produced by membrane method.

A washed steel (non-ferrous) tanker should be used for transportation. Caustic soda flakes should not be packed at high temperature and hot.

Caustic soda flakes have IMCO class 8 and is a dangerous goods.

Industries related to alkaline caustic soda flakes

  • The process of producing chemical solvents
  • Aluminum production in steel and metallurgy industries
  • Refinement of petroleum and mineral oils in petrochemical industries
  • In the cosmetics industry, detergents, exfoliating masks
  • Preparation of industrial cleaners and detergents
  • Rubber industry
  • Principles material in the production of pigments and industrial colors
  • Pharmaceutical industry
  • Use in cleaning and disinfection in livestock farms and bee farms
  • Preventing plant diseases and protecting them in horticulture

A look at the buying and selling market of caustic soda flakes

The top companies producing caustic soda, such as Oxin sood, Parsian sood, Kimia sood, Nirou chlor, Bandar Imam caustic soda, Arvand petrochemical caustic soda, Tabriz caustic soda, etc., usually have prices in a certain range for this They provide chemicals.

In recent years, chemical products have been offered to the commodity exchange. The price caustic soda flakes in the commodity exchange is determined for each company with a specific share.

It is possible to buy caustic soda flakes online through trading companies and smaller companies in the field of buying and selling chemicals.

To buy and sell caustic soda online, it is enough to visit the shimico website and place your order.

In conclusion, caustic soda flakes play an important role in various industries, such as soap and detergent, pulp and paper, water treatment, textile, chemical, drilling fluid, and cleaning and degreasing. Its versatility and effectiveness make it an essential chemical for many processes. However, it is important to handle caustic soda with care, as it is a strong alkali and can cause chemical burns. Proper protective equipment and caution should be exercised when using caustic soda.

Caustic Soda Analysis

CONTENT Test Result
NaOH 99%±0.5 %W
Na2CO3 0.5 %W
NaCl 0.03 %W
Na2SO4 0.005 %W
SiO2 0.007 %W
Fe 6- 9 ppm
Insoluble in Water <0.001 %W
Al2O3 2-5 ppm
Heavy Metals as Pb N.D


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