Caustic Soda

 What is Caustic Soda?

Caustic soda – or sodium hydroxide – is natural co-product of chlorine production. In addition, indeed  laws of chemistry define that for every tonne of chlorine you produce, about 1100 kg of caustic soda is also produced, together with 28 kg of hydrogen.
In addition, it`s basic reactant in making wide range of organic chemicals. 32 % of caustic production uses in this way.

Paper, pulp and cellulose industries also are major users of caustic soda. Inorganic chemicals like paints, glass, ceramics uses in fuel cell production. Furthermore, cosmetics are also very important.

NaOh also uses on: food industry, water treatment (flocculation of heavy metals and acidity control), soaps and detergents sectors, textile sector (bleaching agent), mineral oils (preparation of greases and fuel additives). Furthermore, it uses as synthesis of synthetic fiber rayon. 4% of caustic soda also used in refining aluminium from its ore bauxite.

Furthermore, it has miscellaneous applications, like the synthesis of pharmaceutical compounds, rubber recycling and the neutralization of acids.

More about Caustic Soda:

Sodium hydroxide is an important chemical raw material. Also it can be used in various fields.

Specific information:
Product range: caustic soda flakes 99%
Chemical name: sodium hydroxide
Chemical formula: NaOH
Uses: petroleum refining, papermaking, textile, printing and dyeing, soap, metallurgy, chemical industry, etc.
Packing: 25kg/bag,25T/20’FCL

Sodium hydroxide uses:

Food industry
Adhesives and sealant chemicals
Adsorbents and absorbents
Agricultural chemicals (non-pesticidal)
Anti-adhesive agents
Bleaching agents
Corrosion inhibitors and anti-scaling agents
Finishing agents
Fuels and fuel additives
Functional fluids (closed systems)
Intermediates also
Ion exchange agents
Laboratory chemicals
Oxidizing/reducing agents
Paint additives also coating additives not described by other categories
Plating agents and surface treating agents
Processing aids, not otherwise listed

Also in Process regulators

NaOH specification for download


Caustic soda has many uses at industrial level. It used in cleaning agents manufacturers such as soaps and toilet cleaners.
Sodium Hydroxide also uses in paint stripping. When there is a need to remove paint on any surface including wood, metal, or any furniture caustic soda can come in handy when removing the old paint. When applied to the surface, it causes the paint on the surface to detach itself. This process is known as paint stripping. Caustic soda clears the surfaces of any paint.
At home, it is used to unblock all drainage. A little quantity of caustic soda poured into blocked drainage pipes can clear the pipes of any blockages.

Most people use caustic soda on door stripping. When they wish to change the paint on doors, they use caustic soda to remove the old paint from the doors. Caustic soda easily strips off paint from doors. However, handling NaOH requires high levels of caution as it is a very corrosive chemical compound that is very hazardous to humans.


NaOH hazards:

caustic soda

Signal: Danger
GHS Hazard Statements
Aggregated GHS information provided by 4555 companies from 61 notifications to the ECHA C&L Inventory. Furthermore, each notification may be associated with multiple companies.

In addition, reported as not meeting GHS hazard criteria by 34 of 4555 companies. For more detailed information,

Of the 60 notification(s) provided by 4521 of 4555 companies with hazard statement code(s):

H290 (44.15%): May be corrosive to metals [Warning Corrosive to Metals]
H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H315 (36.03%): Causes also skin irritation [Warning Skin corrosion/irritation]
H318 (40.9%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H319 (36.43%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Information may vary between notifications depending on impurities, additives, also other factors. In addition, percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Furthermore, hazard codes with percentage values above 10% are shown.






Caustic Lye

What is Caustic Lye?

Mostly all caustic soda is generated by the electrolysis of sodium chloride solution using one of three cell types: mercury, diaphragm and membrane cells. The electrolysis process produces 2.25 tonnes of 50% Caustic Lye with each tonne of chlorine.

The primary salt raw material is common  in underground deposits which we bring to surface as a solution in pumped high pressure water supply.

Sodium hydroxide Liquid specification:

Caustic Lye uses:

NaOH Liquid is used primarily in the following areas: manufacturing industries including cotton, synthetics, plastics, textiles and soaps; organic and inorganic chemistry industries (in the manufacture of sodium compounds); the food industry; water treatment; the agricultural industry; etc.
It uses in paper industry, textiles, detergents, synthetics, explosives, dyes and petroleum products; in the processing of cotton textiles; and, in laundry, bleaching, oxidation, electroplating, and electrolyte removal. Other uses include absorbing acid gases such as carbon dioxide or sulfur dioxide.
NaOH is used as a raw material in the production of sodium hypochlorite, as well as in all types of textiles (finishing and dressing, obtaining cellulose fibers from the viscose process, etc.). It acts  as  surfactant and detergent  in paper and pulp, also oil and gas industries.

Caustic Lye Hazardous reactions:

Main safety concerns about lye are also common with most corrosives, such as their potential destructive effects on living tissues. It hearts skin, flesh, and the cornea.
Solutions containing lyes can cause chemical burns, eternal injuries, scarring and blindness also immediately upon contact. Furthermore, Lyes maybe fatal if swallowed. Ingestion can because esophageal stricture. In addition solvation of dry solid lyes is highly exothermic. It results, may cause additional burns or ignite flammables.

The rebound between sodium hydroxide and a few metals is also hazardous. Aluminium reacts with lyes to produce hydrogen gas. Since hydrogen is flammable, mixing a large quantity of a lye such as sodium hydroxide with aluminum in a closed container is dangerous—especially when the system is at a high temperature, which speeds up the reaction. In addition to aluminum, lyes may also react with magnesium, zinc, tin, chromium, brass or bronze—producing hydrogen gas.


Caustic Soda Flake

What is Caustic Soda Flake?

At room temperature, sodium hydroxide is a white crystalline odorless solid that absorbs moisture from the air. It is a manufactured substance. When dissolved in water or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials. Sodium hydroxide is very corrosive. It generally uses as solid or 50% solution. Other common names include caustic soda and lye. Caustic Soda Flake is used in soap, rayon, paper, explosives, dyestuffs, and petroleum products. It used in processing cotton fabric, laundering and bleaching, metal cleaning.  Also processing, oxide coating, electroplating, and electrolytic extracting. It is commonly present in commercial drain and oven cleaners.

Caustic Soda Flake Grades:

Caustic soda can be found in liquid or solid form (Sodium Hydroxide flake, granules or micro-pearls.) Both forms have the same chemical formula and the same applications; therefore, they are interchangeable.Before working with caustic soda, it is important to use a surgical mask to avoid inhaling it. Latex or gardening-type gloves should also be used, as well as safety glasses.

NaOH Flake Grades specification:

caustic-soda-flake Grade 99.9% PDF for download  

caustic-soda-flake Grade 98% PDF for download

caustic soda flake

How to using Caustic Soda Flakes:

Water amount who used in a Pyrex-type flask should be cold, because the temperature will rise. Measure the caustic soda flake and add it to the water, taking care to do this neither too fast nor too slow. NaOH should be sprinkled because it will sink to the bottom quickly. Always add the soda to the water, never vice versa.
Using a Teflon-type spoon, stir slowly without shaking or whisking. A hard layer will form at the bottom and the solution will become cloudy. This is normal. Never use a shaker or blender for soda.
Let the solution stand for a few minutes, then continue stirring and gradually everything will dissolve and the solution will become clearer. The final state of the solution will always be clear.


Caustic Soda Flake

It should be prepared just before use at recommended temperature. It shouldn`t be to cool.  If it cools completely, it will absorb carbon dioxide from the surrounding environment and will form a layer of sodium carbonate that will cloud the solution.

Caustic Soda in water purification add directly to well water. By neutralizing acid water, it prevents the destruction of pipes and pumps during transportation to the refinery. So, adding Sodium Hydroxide in water purification, to acidic water reduces the acids in water.

Consequently, Caustic Soda prevent the corrosion of the pipes and water transport system. In conclusion this reduction in corrosion helps to neutralize hard constituents and prepares water for the next steps of purification.


Caustic Soda Flake

Caustic Soda uses:

Caustic soda flake , sodium hydroxide, mostly used by industry and chemical manufacturing companies. Some fields caustic soda use for :

  • Soaps and cleaners
  • Refineries Alumina
  • plastic wrap
  • Detergent
  • Water treatment
  • Textile processing
  • Oil refining
  • Metal processing

In addition, major users of caustic soda are the aluminum industry, pulp & paper and the chemical industry. Also main usage in water treatment and water purification, as cleaning agent, or a wide range of uses in chemical industry like starch production or for the desulphurization in the petrochemical industry.

Sodium hydroxide (NaOH) also is solution in water. Furthermore Caustic soda is a strong base with a wide range of applications in different industries. We produce caustic soda together with chlorine and hydrogen from the electrolysis of salt brine.