CAS 123-86-4 · K-REACH · Republic of Korea

n-Butyl acetate under K-REACH

C6H12O2 · 乙酸正丁酯

Status: Registered. n-Butyl acetate is registered under K-REACH and listed as a Priority Existing Chemical (PEC). Korean GHS classification matches REACH (Flam. Liq. 3 + STOT SE 3). NOT on Korea TCCA Toxic Chemicals list. NOT on Korean Drug Management Act precursor list. NO active Korean AD/CVD case on Chinese-origin n-butyl acetate. Korea has substantial domestic n-butyl acetate production (LG Chem Yeosu, Lotte Chemical Yeosu) integrated with Cativa-process acetic acid (batch 19) capacity; structurally balanced. KCFTA preferential zero-duty applies for Chinese-origin imports.

K-REACH treats n-butyl acetate as a routine PEC-registered substance with no TCCA overlay (lighter than phenol batch 13 + formaldehyde batch 18 + benzene batch 22). NOT on Korean Drug Management Act precursor list. Korea has **substantial domestic n-butyl acetate production at Yeosu** (LG Chem Yeosu, Lotte Chemical Yeosu) integrated with Cativa-process acetic acid (batch 19) capacity; structurally balanced. NO active Korean AD/CVD case. KCFTA preferential zero-duty supports Chinese-origin supplemental supply. Korean downstream consumers: KCC Corporation (paints), Hyosung Chemicals, Korean automotive paint sector. **n-Butyl acetate distinguishing pattern across all 5 regimes**: completes acetate ester family with ethyl acetate batch 23 + acetic acid batch 19 downstream esterification chain (CH3COOH + n-BuOH → CH3COO-n-Bu + H2O); paint + coating + lacquer industry premium medium-evaporation solvent (vs ethyl acetate fast-evaporation); n-butanol price cycle exposure; lighter hazard than ethyl acetate (Flam. Liq. 3 + STOT SE 3 only, no Eye Irrit. 2).

Listing and threshold

Substance n-Butyl acetate (CAS 123-86-4), C6H12O2
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. 3 (H226), STOT SE 3 (H336)
  • Signal word: WARNING. GHS pictograms: GHS02 + GHS07
  • Korea Occupational Safety and Health Act (KOSHA) workplace exposure standard: 150 ppm 8-hr TWA, 200 ppm STEL
  • NOT on Korea TCCA Toxic Chemicals list
  • NOT on Korean Drug Management Act precursor list
  • Korean Customs Service (KCS) HS code: 291533
  • Listed in K-REACH database under "general industrial use, flammable liquid"
  • Korean Food Standards Codex Article 4 permits n-butyl acetate as food additive flavouring

Restrictions and conditions of use

  • No TCCA Toxic Chemicals Handling Permit required
  • No Chemical Accident Prevention Plan (CAPP) required
  • No Korean Drug Management Act precursor obligations
  • Korea Industrial Safety and Health Act (KOSHA) MSDS in Korean required at workplace
  • Korea Customs Service requires K-REACH registration number on import declaration
  • NO active Korean AD/CVD case on Chinese-origin n-butyl acetate currently
  • KCFTA preferential zero-duty applies to Chinese-origin n-butyl acetate (HS 291533)

Importer obligations

The Korean importer of record must hold K-REACH registration in their own name or rely on an Only Representative (OR). For n-butyl acetate this is a routine PEC registration with no TCCA overlay. Korea has substantial domestic n-butyl acetate production at Yeosu (LG Chem Yeosu, Lotte Chemical Yeosu) integrated with Cativa-process acetic acid (batch 19) capacity; supplemental imports flow during plant outages. Korean downstream consumers: KCC Corporation (paints), Hyosung Chemicals, Korean automotive paint sector (Hyundai Motor + KIA + Renault Korea + GM Korea downstream paint manufacturing).

Required documents

  • K-REACH registration number on Korean side (registrant or OR-appointed)
  • Korean-language MSDS compliant with Korean GHS reflecting H226 / H336 classification
  • Korean Customs Service (KCS) declaration with HS code 291533
  • China-Korea FTA Form CO certificate of origin for preferential treatment
  • Industrial-grade specification certificate (minimum 99.5% purity)

Common compliance traps

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

  • Korean GHS hazard-statement codes use H-codes mapped to Korean translations; SDS in English-only is rejected at workplace inspection
  • Korea has substantial domestic n-butyl acetate production at Yeosu (LG Chem, Lotte Chemical) integrated with Cativa-process acetic acid (batch 19) capacity
  • KCFTA preferential zero-duty applies; verify producer-specific eligibility
  • No active Korean AD/CVD case on Chinese n-butyl acetate currently
  • NOT on TCCA Toxic Chemicals list
  • NOT on Korean Drug Management Act precursor list
  • Korean automotive paint sector (Hyundai Motor + KIA + Renault Korea + GM Korea downstream paint manufacturing) drives substantial captive demand
  • **Acetic acid (batch 19) + n-butanol feedstock cost flow-through is dominant**: Korean LG Chem Yeosu + Lotte Chemical Yeosu integrated chain captures the value structurally

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for n-butyl acetate, see the CAS 123-86-4 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the n-butyl acetate 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

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