Sodium hydroxide (caustic soda); solid

HS v2022 Code: 281511

About sodium hydroxide (caustic soda); solid

HS code 281511 covers the classification of solid sodium hydroxide, commonly known as caustic soda. This essential chemical compound is a vital raw material for a wide range of industries, including chemical manufacturing, paper production, water treatment, and more. As a highly alkaline substance, sodium hydroxide plays a crucial role in numerous industrial processes, making it a cornerstone of the global economy.

Production process

Solid sodium hydroxide is primarily produced through the electrolysis of a sodium chloride (salt) solution. This process, known as the chlor-alkali process, involves the separation of the sodium and chloride ions, with the sodium ions then reacting with water to form sodium hydroxide. The resulting solid sodium hydroxide is then purified and packaged for distribution and use in various applications.

Production inputs

The main inputs required for the production of solid sodium hydroxide include salt (sodium chloride), water, and electricity to power the electrolysis process. Additionally, specialized equipment such as electrolytic cells, evaporators, and drying systems are necessary to facilitate the production and purification of the final product.

Production outputs

Solid sodium hydroxide produced under HS code 281511 is a versatile chemical that finds application in a wide range of industries. It is a key ingredient in the manufacture of various chemicals, including 281512 (Sodium hydroxide in aqueous solution (soda lye or liquid soda)) and 281530 Potassium hydroxide (caustic potash, as well as being used in the production of soaps, detergents, and paper. The output of this industry is an essential input for many other economic activities.

Revisions to 281511

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 281511. The most recent 1 version of this code (281511) is in the HS v2022 system (this version):

This page shows the most recent version of code 281511.

Family tree for sodium hydroxide (caustic soda); solid

    graph LR
    A["<a href='/classifications/hs/v2022/28'>28: Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes</a>"]
A --> B["<a href='/classifications/hs/v2022/2815'>2815: Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium</a>"]
B --> C["<a href='/classifications/hs/v2022/281511'>281511: Sodium hydroxide (caustic soda); solid</a>"]

    B --> D["<a href='/classifications/hs/v2022/281512'>281512: Sodium hydroxide (caustic soda); in aqueous solution (soda lye or liquid soda)</a>"]
B --> E["<a href='/classifications/hs/v2022/281520'>281520: Potassium hydroxide (caustic potash)</a>"]
B --> F["<a href='/classifications/hs/v2022/281530'>281530: Peroxides of sodium or potassium</a>"]

    

    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight