Liquid Caustic soda lye

liquid caustic soda IBC packing

What is liquid caustic soda lye ?

Liquid caustic soda lye is normally produce by the electrolysis of a sodium chloride (NaCl) solution. Basekim manufactures caustic soda using either membrane or diaphragm electrolytic cells also we dont not use mercury based electrolytic cells to produce caustic soda. The co-products formed from the electrolytic production of caustic soda are chlorine and hydrogen.
Liquid caustic soda lye is simply an alkaline liquid caustic soda solution which is An inorganic industrial chemical with wide range of applications It’s a typical alkaline substance made by electrolyzing brine. It is used in wide range of applications even more liquid caustic soda is highly caustic base and alkali therefore can break down proteins at ordinary ambient temperatures and cause severe chemical l burns.
Liquid caustic soda is available as a 50% and 30% solution in two main grades which is different in producing method membrane grade and diaphragm grade , its good to know that Sodium chloride is a raw material and in production method whatever remain show the producing method which is used Membrane grade caustic soda will have less than 100 ppm of the sodium chloride remaining in the product. Diaphragm grade material will have less than 1.1% sodium chloride. Several other differences can be seen in the products when the specification sheets are compared.

Caustic Soda 50% Membrane grade

Total Alkalinity as Na2O (wt. %)
Hydroxide Alkalinity as NaOH (wt. %)
Sodium Carbonate as Na2CO3 (wt. %)
Sodium Chloride as NaCl (ppm by wt.)
Sodium Chlorate as NaClO3 (ppm by wt.)
Sodium Sulfate as Na2SO4 (ppm by wt.)
Iron as Fe (ppm by wt.)
Copper as Cu (ppm by wt.)
Nickel as Ni (ppm by wt.)

Caustic Soda 50% Diaphragm grade

Total Alkalinity as Na2O (wt. %)
Hydroxide Alkalinity as NaOH (wt. %)
Sodium Carbonate as Na2CO3 (wt. %)
Sodium Chloride as NaCl (wt. %)
Sodium Chlorate as NaClO3 (wt. %)
Sodium Sulfate as Na2SO4 (wt. %)
Iron as Fe (ppm by wt.)
Copper as Cu (ppm by wt.)
Nickel as Ni (ppm by wt.)


Physical property of Lye soda

Color: Colorless to slightly colored
Physical State: Liquid
Appearance: Clear to opaque
Odor: Odorless

Caustic soda Liquid have different name as below :

  • Trade Name: Caustic Soda Diaphragm Grade 7%, 10%, 15%, 18%, 18.5%, 20%, 25%, 30%,
  • 35%, 40%, 50%, Caustic Soda Membrane 6%, 7%, 18%, 20%, 25%, 30%, 48%,50%, 50% Caustic Soda Membrane OS, 50% Caustic Soda Diaphragm OS,Membrane Blended, Membrane Cell Liquor, Diaphragm Cell Liquor, Caustic Soda Food Grade
  • Synonyms: Sodium hydroxide solution, Liquid Caustic, Lye Solution, Caustic, Lye,Soda Lye,Secondary Caustic Soda Liquids
  • Chemical Family: Alkali Metal Hydroxide Solutions

How Caustic liquid transport?

Caustic soda liquid  is shipped via pipelines, tank trucks, railcars, barges , container and ships. Terminals are used to maintain stocks of our caustic soda in many principal cities. Distributor stocks are also available in these and many other cities and form a network of supply for the end user’s convenience.

Packing of caustic soda liquid

lye can be packed in several ways furthermore it can be bulk in iso tank or tanker normally manufacture which has bulk storage area use tanker its more cost effective however if storage is not available we can pack it in IBC or Drum which IBC is more cost effective .

  • Iso tank , loading up to 22 Ton
  • Tanker , according to road limits can load 22 Ton
  • IBC 1.5 Ton
  • Drum 200 kgs

liquid caustic soda IBC packing

caustic soda liquid Properties

Analysis Unit Specification
Apperance Clear,Liquid
Density g/ml 1,51±0,010

Chemical Properties

Analysis Unit Specification
Total Alkalinity % 50,00 Max.
Sodium Chloride ppm 100 Max.
Sodium Chlorate ppm 40 Max.
Sodium Carbonate g/kg 1 Max.
Heavy Metal ppm 10 Max.
Iron ppm 5 Max.



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