CAS 80-62-6 · K-REACH · Republic of Korea

Methyl methacrylate (MMA) under K-REACH

C5H8O2 · 甲基丙烯酸甲酯

Status: Registered. MMA is registered under K-REACH and listed as a Priority Existing Chemical (PEC). Korean GHS classification matches REACH (Flam. Liq. 2 plus Skin Irrit. 2 plus Skin Sens. 1 plus 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 MMA. **Korea has substantial domestic MMA production**: LG MMA, Sumitomo Chemical Korea, Mitsubishi Chemical Korea; structurally balanced. KCFTA preferential zero-duty applies for Chinese-origin imports.

K-REACH treats MMA as a routine PEC-registered substance with no TCCA overlay. Korea has **substantial domestic MMA production** (LG MMA, Sumitomo Chemical Korea, Mitsubishi Chemical Korea); structurally balanced. NO active Korean AD/CVD case. KCFTA preferential zero-duty supports Chinese-origin supplemental supply. **MMA distinguishing pattern across all 5 regimes**: PMMA polymethyl methacrylate (plexiglass / acrylic) primary downstream chain (~70 percent of demand) + ACH acetone-cyanohydrin route (~50 percent globally) plus C4 oxidation route (~25 percent) plus BAMM ethylene-based Lurgi C2 oxidation route (~25 percent and growing as preferred new technology) + Flam. Liq. 2 plus Skin Irrit. 2 plus Skin Sens. 1 plus STOT SE 3 + sister to acrylic acid batch 39 ester chain + Korean PMMA optical-grade LCD light-guide-panel premium chain (LG Display plus Samsung Display).

Listing and threshold

Substance Methyl methacrylate (MMA) (CAS 80-62-6), C5H8O2
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), Skin Irrit. 2 (H315), Skin Sens. 1 (H317), STOT SE 3 (H335)
  • Signal word: DANGER. GHS pictograms: GHS02 plus GHS07
  • Korea Occupational Safety and Health Act (KOSHA) workplace exposure standard: 100 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: 291614
  • IARC: Group 3

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
  • NO active Korean AD/CVD case on Chinese-origin MMA currently
  • KCFTA preferential zero-duty applies to Chinese-origin MMA (HS 291614)

Importer obligations

The Korean importer of record must hold K-REACH registration. Korea has substantial domestic MMA production: LG MMA, Sumitomo Chemical Korea, Mitsubishi Chemical Korea; supplemental imports flow during plant outages. Korean downstream consumers: LG Chem plus LG Display (PMMA optical-grade for LCD light-guide-panel), Korean automotive plus signage plus architectural plus medical sectors.

Required documents

  • K-REACH registration number on Korean side (registrant or OR-appointed)
  • Korean-language MSDS compliant with Korean GHS reflecting H225 / H315 / H317 / H335 classification
  • Korean Customs Service (KCS) declaration with HS code 291614
  • China-Korea FTA Form CO certificate of origin for preferential treatment
  • Industrial-grade specification certificate

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
  • Korea has substantial domestic MMA production: LG MMA, Sumitomo Chemical Korea, Mitsubishi Chemical Korea; structurally balanced
  • KCFTA preferential zero-duty applies; verify producer-specific eligibility
  • NO active Korean AD/CVD case on Chinese MMA currently
  • NOT on TCCA Toxic Chemicals list
  • Korean PMMA demand: LCD light-guide-panel optical-grade is structurally distinct premium grade (LG Display plus Samsung Display chains)

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for methyl methacrylate (mma), see the CAS 80-62-6 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the methyl methacrylate (mma) 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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