CAS 7681-52-9 · K-REACH · Republic of Korea

Sodium hypochlorite under K-REACH

NaClO · 次氯酸钠

Status: Registered. Sodium hypochlorite is registered under K-REACH. NOT on Korea TCCA Toxic Chemicals list (verify against the current TCCA Toxic Chemicals list at https://www.nics.go.kr/ before relying). NOT on Korean Drug Management Act precursor list. NO active Korean AD/CVD case on Chinese-origin sodium hypochlorite currently (verify against https://www.kita.org/ or Korea Trade Commission filings before invoicing). **K-BPR (Consumer Chemical Products and Biocides Safety Act) registration required** where placed as biocidal product in Korea (verify against the most recent K-BPR active-substance list and product-type scope at https://chemical.chemlinked.com/chempedia/k-bpr before relying). Korea has substantial domestic chlor-alkali capacity at Yeosu plus Onsan (LG Chem, Hanwha Solutions, Kumho Petrochemical chlor-alkali capacity); structurally balanced. KCFTA preferential zero-duty applies for Chinese-origin imports.

K-REACH treats sodium hypochlorite as a routine registered substance with no TCCA overlay but **K-BPR registration** required where placed as biocidal product (verify before relying). Korea has substantial domestic chlor-alkali capacity. NO active Korean AD/CVD case. **Sodium hypochlorite distinguishing pattern across all 5 regimes**: chlor-alkali co-product (Cl2 absorption in NaOH solution) production route + disinfectant plus bleaching plus water-treatment downstream chains (industrial concentration ~10 to 15 percent active chlorine; household bleach ~5 percent) + Skin Corr. 1B plus Aquatic Acute 1 plus EUH031 hazard profile + biocidal-product regulation overlay across EU (BPR), US (FIFRA), Australia (APVMA / TGA), Korea (K-BPR), and China (Disinfectant Hygiene Permit).

Listing and threshold

Substance Sodium hypochlorite (CAS 7681-52-9), NaClO
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 (concentration-dependent): Skin Corr. 1B (H314), Aquatic Acute 1 (H400), Eye Dam. 1 (H318), EUH031
  • Signal word: DANGER. GHS pictograms: GHS05 + GHS09
  • KOSHA workplace exposure standard (verify against KOSHA OEL database before relying)
  • NOT on Korea TCCA Toxic Chemicals list
  • NOT on Korean Drug Management Act precursor list
  • Korean Customs Service (KCS) HS code: 282890
  • **K-BPR active substance** where placed as biocidal product (verify against the most recent K-BPR active-substance list before relying)

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 sodium hypochlorite currently
  • KCFTA preferential zero-duty applies (HS 282890)
  • **K-BPR registration** required where placed as biocidal product

Importer obligations

Korean importer of record must hold K-REACH registration. Korea has substantial domestic chlor-alkali capacity at Yeosu plus Onsan.

Required documents

  • K-REACH registration number on Korean side
  • Korean MSDS reflecting H290 / H314 / H318 / H400 / EUH031
  • KCS declaration with HS 282890
  • China-Korea FTA Form CO
  • **K-BPR registration** documentation where placed as biocidal product

Common compliance traps

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

  • Korea has substantial domestic chlor-alkali capacity at Yeosu plus Onsan
  • KCFTA preferential zero-duty applies
  • NO active Korean AD/CVD case
  • NOT on TCCA Toxic Chemicals list
  • **K-BPR registration** required where placed as biocidal product

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for sodium hypochlorite, see the CAS 7681-52-9 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the sodium hypochlorite 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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