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

HS v2017 Code: 280461

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

HS code 280461 covers the classification of 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 microchips, solar cells, and other high-tech components that power our modern digital world. As a key input for numerous downstream industries, the global trade and production of this specialized silicon product plays a significant role in the broader economy.

Production process

The production of 99.99% pure silicon typically involves the reduction of silicon dioxide (SiO2) through a high-temperature carbothermic or metallothermic process. This involves heating the raw material to extremely high temperatures, often in an electric arc furnace, to extract the pure silicon. The resulting molten silicon is then cast into ingots or blocks, which are subsequently cut, refined, and processed further to meet the exacting purity and quality standards required for advanced applications.

Production inputs

The main inputs required for the production of HS code 280461 silicon include high-purity silicon dioxide (quartz) as the primary raw material, as well as carbon sources such as coal, coke, or charcoal to facilitate the reduction process. Specialized furnaces, crucibles, and other high-temperature equipment are also essential for the manufacturing of this highly pure silicon product.

Production outputs

The primary output of HS code 280461 is the 99.99% pure silicon material, which is then consumed by a variety of downstream industries. This includes the 854231 semiconductor industry, where it is used to produce integrated circuits, microprocessors, and other electronic components. The 854140 photovoltaic industry also relies heavily on this grade of silicon for the manufacture of solar cells and panels. Additionally, the output of HS code 280461 may be further processed and incorporated into 681599 other silicon-based products for various industrial and technological 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 page shows a legacy version of code 280461 ( HS v2017).

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

    graph LR
    A["<a href='/classifications/hs/v2017/28'>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/v2017/2804'>2804: Hydrogen, rare gases and other non-metals</a>"]
B --> C["<a href='/classifications/hs/v2017/280461'>280461: Silicon; containing by weight not less than 99.99% of silicon</a>"]

    B --> D["<a href='/classifications/hs/v2017/280410'>280410: Hydrogen</a>"]
B --> E["<a href='/classifications/hs/v2017/280421'>280421: Gases, rare; argon</a>"]
B --> F["<a href='/classifications/hs/v2017/280429'>280429: Gases, rare; other than argon</a>"]
B --> G["<a href='/classifications/hs/v2017/280430'>280430: Nitrogen</a>"]
B --> H["<a href='/classifications/hs/v2017/280440'>280440: Oxygen</a>"]
B --> I["<a href='/classifications/hs/v2017/280450'>280450: Boron; tellurium</a>"]
B --> J["<a href='/classifications/hs/v2017/280469'>280469: Silicon; containing by weight less than 99.99% of silicon</a>"]
B --> K["<a href='/classifications/hs/v2017/280470'>280470: Phosphorus</a>"]
B --> L["<a href='/classifications/hs/v2017/280480'>280480: Arsenic</a>"]
B --> M["<a href='/classifications/hs/v2017/280490'>280490: Selenium</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 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