Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, tetrahydrofuran

HS v2022 Code: 293211

About heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, tetrahydrofuran

HS code 293211 covers a class of heterocyclic organic compounds known as tetrahydrofurans. These compounds play a crucial role in various industries, including pharmaceuticals, solvents, and specialty chemicals. As a key building block for many important molecules, the tetrahydrofuran industry is an integral part of the broader chemical sector and contributes significantly to the global economy.

Production process

Tetrahydrofurans are typically produced through the hydrogenation of furan, a cyclic ether. This process involves the catalytic addition of hydrogen to the furan ring, resulting in the formation of the tetrahydrofuran molecule. Manufacturers may employ various catalysts and reaction conditions to optimize the yield and purity of the final product.

Production inputs

The primary raw material for the production of tetrahydrofurans is furan, which is often derived from agricultural waste or other renewable sources. In addition to furan, the industry requires access to hydrogen gas, catalysts, and specialized equipment such as reactors, distillation columns, and purification systems. Skilled labor and technical expertise are also essential inputs for the efficient and safe production of these heterocyclic compounds.

Production outputs

Tetrahydrofurans produced under HS code 293211 find applications in a wide range of industries. They are used as solvents, intermediates in the synthesis of pharmaceuticals and agrochemicals, and as building blocks for the production of other 293219 (Heterocyclic compounds with oxygen hetero-atom(s) only, not elsewhere specified or included) and 293290 (Heterocyclic compounds with oxygen hetero-atom(s) only, not elsewhere specified or included) compounds. The versatility of tetrahydrofurans makes them an essential component in the global chemical supply chain.

Revisions to 293211

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 293211. The most recent 1 version of this code (293211) is in the HS v2022 system (this version):

This page shows the most recent version of code 293211.

Family tree for heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, tetrahydrofuran

    graph LR
    A["<a href='/classifications/hs/v2022/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2022/2932'>2932: Heterocyclic compounds with oxygen hetero-atom(s) only</a>"]
B --> C["<a href='/classifications/hs/v2022/293211'>293211: Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, tetrahydrofuran</a>"]

    B --> D["<a href='/classifications/hs/v2022/293212'>293212: Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, 2-furaldehyde (furfuraldehyde)</a>"]
B --> E["<a href='/classifications/hs/v2022/293213'>293213: Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, furfuryl alcohol and tetrahydrofurfuryl alcohol</a>"]
B --> F["<a href='/classifications/hs/v2022/293214'>293214: Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, sucralose</a>"]
B --> G["<a href='/classifications/hs/v2022/293219'>293219: Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, n.e.c. in item no. 2932.1</a>"]
B --> H["<a href='/classifications/hs/v2022/293220'>293220: Heterocyclic compounds; with oxygen hetero-atom(s) only, containing an unfused furan ring (whether or not hydrogenated) in the structure, lactones</a>"]
B --> I["<a href='/classifications/hs/v2022/293291'>293291: Heterocyclic compounds; with oxygen hetero-atom(s) only, (other than lactones or compounds containing an unfused furan ring (whether or not hydrogenated) in the structure), isosafrole</a>"]
B --> J["<a href='/classifications/hs/v2022/293292'>293292: Heterocyclic compounds; with oxygen hetero-atom(s) only, (other than lactones or compounds containing an unfused furan ring (whether or not hydrogenated) in the structure), 1-(1,3-Benzodioxol-5-yl)propan-2-one</a>"]
B --> K["<a href='/classifications/hs/v2022/293293'>293293: Heterocyclic compounds; with oxygen hetero-atom(s) only, (other than lactones or compounds containing an unfused furan ring (whether or not hydrogenated) in the structure), piperonal</a>"]
B --> L["<a href='/classifications/hs/v2022/293294'>293294: Heterocyclic compounds; with oxygen hetero-atom(s) only, (other than lactones or compounds containing an unfused furan ring (whether or not hydrogenated) in the structure), safrole</a>"]
B --> M["<a href='/classifications/hs/v2022/293295'>293295: Heterocyclic compounds; with oxygen hetero-atom(s) only, (other than lactones or compounds containing an unfused furan ring (whether or not hydrogenated) in the structure), tetrahydrocannabinols (all isomers)</a>"]
B --> N["<a href='/classifications/hs/v2022/293296'>293296: Heterocyclic compounds; with oxygen hetero-atom(s) only, (other than lactones or compounds containing an unfused furan ring (whether or not hydrogenated) in the structure), carbofuran (ISO)</a>"]
B --> O["<a href='/classifications/hs/v2022/293299'>293299: Heterocyclic compounds; with oxygen hetero-atom(s) only, no lactones or unfused furan rings in the structure, other than isosafrole, 1-(1,3-benzodiaxol-5-yl) propan-2-one, piperonal, safrole, tetrahydrocannabinols (all isomers), carbofuran (ISO)</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 N level6
class O 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