Cyclohexane under K-REACH
C6H12 · 环己烷
Status: Registered. Cyclohexane is registered under K-REACH and listed as a Priority Existing Chemical (PEC). NOT on Korea TCCA Toxic Chemicals list. NOT on Korean Drug Management Act precursor list. NO active Korean AD/CVD case on Chinese-origin cyclohexane. **Korea has substantial domestic cyclohexane production** (LG Chem, Lotte Chemical, Hanwha Solutions, KPIC integrated KA-oil-to-caprolactam plus KA-oil-to-adipic-acid capacity); structurally balanced. KCFTA preferential zero-duty applies for Chinese-origin imports.
K-REACH treats cyclohexane as a routine PEC-registered substance with no TCCA overlay. Korea has substantial domestic cyclohexane production at Yeosu integrated with caprolactam batch 14 plus adipic acid batch 51 KA-oil chain. NO active Korean AD/CVD case. **Cyclohexane distinguishing pattern across all 5 regimes**: KA oil (cyclohexanone plus cyclohexanol) intermediate route to caprolactam batch 14 (nylon 6 chain, ~50 percent of demand) plus adipic acid batch 51 (nylon 6,6 chain, ~50 percent of demand) via two-stage oxidation + benzene batch 22 hydrogenation production route (~95 percent globally) + Asp. Tox. 1 (aspiration hazard) + Aquatic Chronic 1 + 0% China VAT export rebate.
Listing and threshold
| Substance | Cyclohexane (CAS 110-82-7), C6H12 |
|---|---|
| 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: Flam. Liq. 2 (H225), Asp. Tox. 1 (H304), Skin Irrit. 2 (H315), STOT SE 3 (H336), Aquatic Acute 1 (H400), Aquatic Chronic 1 (H410)
- Signal word: DANGER. GHS pictograms: GHS02 plus GHS07 plus GHS08 plus GHS09
- KOSHA workplace exposure standard: 200 ppm 8-hr TWA
- NOT on Korea TCCA Toxic Chemicals list
- NOT on Korean Drug Management Act precursor list
- Korean Customs Service (KCS) HS code: 290211
- IARC: Group 3
Restrictions and conditions of use
- No TCCA Toxic Chemicals Handling Permit required
- KOSHA MSDS in Korean required at workplace
- NO active Korean AD/CVD case on Chinese cyclohexane currently
- KCFTA preferential zero-duty applies (HS 290211)
Importer obligations
Korean importer of record must hold K-REACH registration. Korea has substantial domestic cyclohexane production at Yeosu integrated with caprolactam batch 14 plus adipic acid batch 51 KA-oil chain.
Required documents
- K-REACH registration number on Korean side
- Korean MSDS reflecting H225 / H304 / H315 / H336 / H400 / H410
- KCS declaration with HS 290211
- China-Korea FTA Form CO
Common compliance traps
The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.
- Korea has substantial domestic cyclohexane production at Yeosu
- KCFTA preferential zero-duty applies
- NO active Korean AD/CVD case
- NOT on TCCA Toxic Chemicals list
Where to read next
For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for cyclohexane, see the CAS 110-82-7 sourcing reference.
For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the cyclohexane 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
Regulatory
Cyclohexane under REACH
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Cyclohexane under TSCA
United States of America listing status, classifications, importer obligations.
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Cyclohexane under IECSC
People's Republic of China listing status, classifications, importer obligations.
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Cyclohexane under AICIS
Australia listing status, classifications, importer obligations.
Glossary
K-REACH, K-REACH
South Korean Act on the Registration and Evaluation of Chemicals, the Korean equivalent of EU REACH. Requires registration of substances manufactured in or imported into Korea above 1 tonne per year. Administered by the Ministry of Environment through NIER. Includes phase-in registration tiers, joint submission requirements, and a designated 'Only Representative' mechanism for non-Korean manufacturers.
Referenced in
5 pages across the Sourzi moat
This term shows up in 4 regulatory pages, 1 topic clusters. Sample backlinks per content type below.
Free download
Free PDF: the same MSDS verification template the Sourzi team uses to cross-reference factory documents against TSCA, REACH, AICIS, and CDR before booking.