CAS 100-41-4 · K-REACH · Republic of Korea

Ethylbenzene under K-REACH

C8H10 · 乙苯

Status: Registered. Ethylbenzene is registered under K-REACH. **Korea TCCA Toxic Chemicals list status: verify the current TCCA Toxic Chemicals list entry against the most recent National Institute of Chemical Safety (NICS) toxic-chemical database before relying; ethylbenzene's Carc. 2 + STOT RE 2 ear damage + Asp. Tox. 1 hazard profile may trigger TCCA scheduling.** NOT on Korean Drug Management Act precursor list. NO active Korean AD/CVD case on Chinese-origin ethylbenzene currently (verify against https://www.kita.org/ or Korea Trade Commission filings before invoicing). Korea has substantial domestic ethylbenzene production (typically integrated with downstream styrene at LG Chem, Lotte Chemical, S-OIL); structurally balanced producer-importer. KCFTA preferential zero-duty applies for Chinese-origin imports. IARC Group 2B since Volume 77 (2000).

K-REACH treats ethylbenzene as a registered substance with **TCCA Toxic Chemicals scheduling potentially applicable** (verify against NICS database). Korea has substantial domestic production integrated with styrene at LG Chem + Lotte Chemical + S-OIL; balanced producer-importer. NO active Korean AD/CVD case. **Ethylbenzene distinguishing pattern across all 5 regimes**: ~99% of production is captive feedstock for downstream styrene monomer batch 25 via Mobil-Badger zeolite-catalyst process or Dow / Lummus AlCl3-liquid-phase Friedel-Crafts alkylation of benzene batch 22 plus ethylene + completes BTX aromatics chain alongside benzene + toluene + xylenes + styrene + moderate-to-high hazard profile across regimes (Carc. 2 + Asp. Tox. 1 + STOT RE 2 ear damage + Flam. Liq. 2 + Acute Tox. 4 inhalation harmonised CLP) + IARC Group 2B since Volume 77 (2000) + US TSCA Section 6(b) high-priority December 2019 + US Cal Prop 65 carcinogen 11 June 2004 + EU definitive AD on Chinese-origin downstream styrene per Reg (EU) 2024/2003 (ethylbenzene captive-feedstock duty exposure flows downstream).

Listing and threshold

Substance Ethylbenzene (CAS 100-41-4), C8H10
Regime Korea Act on the Registration and Evaluation of Chemicals (Act No. 11789, "K-REACH" amended 2018)
Jurisdiction Republic of Korea
Status Registered
Tonnage threshold K-REACH registration required for existing chemicals manufactured or imported >1 tonne/year (verified per Korean Ministry of Environment / NIER guidance, https://chemical.chemlinked.com/chempedia/k-reach; threshold for new substances was reduced from 0.1 t/y to 1 t/y effective 1 January 2025 per K-REACH 2025 amendment)

Classifications under this regime

  • Korean GHS classification: Carc. 2 + Asp. Tox. 1 + STOT RE 2 ear damage + Flam. Liq. 2 + Acute Tox. 4 inhalation (mirroring harmonised CLP)
  • **Korea TCCA Toxic Chemicals list status: verify against NICS toxic-chemical database before relying (Carc. 2 + STOT RE 2 hazard profile may trigger TCCA scheduling)**
  • NOT on Korean Drug Management Act precursor list
  • Korean Customs Service (KCS) HS code: 290260
  • IARC Group 2B (possibly carcinogenic to humans) since Volume 77 (2000) (verify against monographs.iarc.who.int)

Restrictions and conditions of use

  • TCCA Toxic Chemicals Handling Permit obligations apply where TCCA-scheduled (verify TCCA status against NICS database)
  • KOSHA MSDS in Korean required at workplace (Carc. 2 + Flam. Liq. 2 hazard profile)
  • NO active Korean AD/CVD case on Chinese ethylbenzene currently
  • KCFTA preferential zero-duty applies (HS 290260)

Importer obligations

Korean importer of record must hold K-REACH registration. Korea has substantial domestic ethylbenzene production (typically integrated with styrene at LG Chem, Lotte Chemical, S-OIL); structurally balanced producer-importer.

Required documents

  • K-REACH registration number on Korean side
  • Korean MSDS (Carc. 2 + Flam. Liq. 2 + STOT RE 2 + Asp. Tox. 1 hazard profile)
  • KCS declaration with HS 290260
  • China-Korea FTA Form CO
  • TCCA Toxic Chemicals Handling Permit where TCCA-scheduled

Common compliance traps

The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.

  • Korea has substantial domestic ethylbenzene production (integrated with styrene at LG Chem + Lotte Chemical + S-OIL); balanced producer-importer
  • KCFTA preferential zero-duty applies
  • NO active Korean AD/CVD case
  • **TCCA Toxic Chemicals list status: verify against NICS database (Carc. 2 + STOT RE 2 hazard profile may trigger scheduling)**
  • IARC Group 2B since Volume 77 (2000)

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for ethylbenzene, see the CAS 100-41-4 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the ethylbenzene cornerstone hub covers the full sourcing chain.

For the structure and history of K-REACH, see the K-REACH glossary entry.

Need cross-jurisdiction compliance support on this substance? Run it through the REACH / TSCA / IECSC / AICIS / K-REACH checker, or send us the substance and the destination and we will quote FOB China and CIF / DDP landed including the regulatory work on the destination side.

Read next

Cross-jurisdiction profile and sourcing references

Referenced in

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