Silicon; containing by weight not less than 99.99% of silicon

HS v2022 Code: 280461

About silicon; containing by weight not less than 99.99% of silicon

HS code 280461 covers silicon containing by weight not less than 99.99% of silicon. This highly pure form of silicon is a critical material in the electronics and semiconductor industries, enabling the production of advanced computer chips, solar cells, and other high-tech components that are essential to modern technology. As a key input for many downstream industries, the global trade in this specialized silicon product plays a significant role in the broader economy.

Production process

The production of 99.99% pure silicon involves a multi-step process. First, raw materials such as quartzite or coal are melted in an electric arc furnace to produce metallurgical-grade silicon. This intermediate product is then further refined through a series of chemical and physical processes to remove impurities and increase the silicon content to the required 99.99% purity level.

Production inputs

The main inputs for the production of HS code 280461 silicon include quartzite, coal, and electricity to power the electric arc furnaces. Specialized equipment such as distillation columns, filters, and other purification systems are also essential for the refining process to achieve the desired high purity level.

Production outputs

The highly pure silicon produced under HS code 280461 is a critical input for the manufacture of 854231 Diodes, transistors and similar semiconductor devices and 854239 Other semiconductor devices, as well as 854140 (Photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED)) used in solar panels and other renewable energy applications.

Revisions to 280461

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 280461. The most recent 1 version of this code (280461) is in the HS v2022 system (this version):

This page shows the most recent version of code 280461.

Family tree for silicon; containing by weight not less than 99.99% of silicon

    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/v2022/2804'>2804: Hydrogen, rare gases and other non-metals</a>"]
B --> C["<a href='/classifications/hs/v2022/280461'>280461: Silicon; containing by weight not less than 99.99% of silicon</a>"]

    B --> D["<a href='/classifications/hs/v2022/280410'>280410: Hydrogen</a>"]
B --> E["<a href='/classifications/hs/v2022/280421'>280421: Gases, rare; argon</a>"]
B --> F["<a href='/classifications/hs/v2022/280429'>280429: Gases, rare; other than argon</a>"]
B --> G["<a href='/classifications/hs/v2022/280430'>280430: Nitrogen</a>"]
B --> H["<a href='/classifications/hs/v2022/280440'>280440: Oxygen</a>"]
B --> I["<a href='/classifications/hs/v2022/280450'>280450: Boron; tellurium</a>"]
B --> J["<a href='/classifications/hs/v2022/280469'>280469: Silicon; containing by weight less than 99.99% of silicon</a>"]
B --> K["<a href='/classifications/hs/v2022/280470'>280470: Phosphorus</a>"]
B --> L["<a href='/classifications/hs/v2022/280480'>280480: Arsenic</a>"]
B --> M["<a href='/classifications/hs/v2022/280490'>280490: Selenium</a>"]

    

    %% Color coordination by level

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    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 G level6
class H level6
class I level6
class J level6
class K level6
class L level6
class M 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