Alkali or alkali-earth metals; calcium

HS v2017 Code: 280512

About alkali or alkali-earth metals; calcium

HS code 280512 covers the classification of calcium, a vital alkali-earth metal with a wide range of industrial and commercial applications. Calcium is an essential element for many industries, from construction and agriculture to pharmaceuticals and electronics. Its importance in the global economy cannot be overstated, as it serves as a key input for a diverse array of products and processes.

Production process

Calcium is primarily produced through the electrolytic reduction of calcium oxide (lime) or the thermal reduction of calcium compounds, such as calcium carbonate (limestone). These processes involve high temperatures and specialized equipment to extract and purify the calcium metal. The final product is then graded and packaged for distribution to various end-users.

Production inputs

The main inputs required for the production of calcium under HS code 280512 include limestone or other calcium-rich minerals, as well as energy sources (such as electricity or natural gas) to power the extraction and refining processes. Additionally, specialized machinery and equipment, such as electrolytic cells, furnaces, and purification systems, are essential for the efficient and high-quality production of calcium.

Production outputs

Calcium produced under HS code 280512 is a versatile material with a wide range of applications. It is used in the production of 271011 cement, 310210 fertilizers, and 300490 pharmaceutical products. Calcium also finds use in the 284700 electronics industry, where it is employed in the manufacture of components and devices. Additionally, calcium may be further processed and combined with other elements to create 284700 alloys for various industrial and construction applications.

Revisions to 280512

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 280512. The most recent 1 version of this code (280512) is in the HS v2022 system:

This page shows a legacy version of code 280512 ( HS v2017).

Newer versions
Older versions

Family tree for alkali or alkali-earth metals; calcium

    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/v2017/2805'>2805: Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury</a>"]
B --> C["<a href='/classifications/hs/v2017/280512'>280512: Alkali or alkali-earth metals; calcium</a>"]

    B --> D["<a href='/classifications/hs/v2017/280511'>280511: Alkali or alkali-earth metals; sodium</a>"]
B --> E["<a href='/classifications/hs/v2017/280519'>280519: Alkali or alkali-earth metals; other than sodium and calcium</a>"]
B --> F["<a href='/classifications/hs/v2017/280530'>280530: Earth-metals, rare; scandium and yttrium, whether or not intermixed or interalloyed</a>"]
B --> G["<a href='/classifications/hs/v2017/280540'>280540: Mercury</a>"]

    

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    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 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