CAS 471-34-1 · K-REACH · Republic of Korea

Calcium carbonate (GCC / PCC / limestone) under K-REACH

CaCO3 · 碳酸钙

Status: Registered. Calcium carbonate 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 calcium carbonate currently (verify against https://www.kita.org/ or Korea Trade Commission filings before invoicing). **Korean Food Code recognises calcium carbonate as a food additive** (verify against MFDS / Korean Food Code before relying). Korea has domestic GCC production from limestone quarries (Korea is structurally limestone-rich); structurally net-importer of high-purity PCC for paper / paint / plastics / rubber filler markets. KCFTA preferential zero-duty applies for Chinese-origin imports.

K-REACH treats calcium carbonate as a routine registered substance with no TCCA overlay. Korea has domestic GCC quarries; net-importer of high-purity PCC. NO active Korean AD/CVD case. **Calcium carbonate distinguishing pattern across all 5 regimes**: GCC ground calcium carbonate (natural limestone quarry plus mill) and PCC precipitated calcium carbonate (synthetic via Ca(OH)2 plus CO2 carbonation) production routes + completes calcium / lime cycle alongside CaO batch 67 plus Ca(OH)2 batch 66 + paper plus paint / coating plus plastics plus rubber plus cement plus FGD plus food-grade E170 plus pharma antacid plus animal feed downstream chains + low hazard profile across regimes (respirable dust handling) + nano-form CaCO3 has separate REACH 2018/1881 obligations.

Listing and threshold

Substance Calcium carbonate (GCC / PCC / limestone) (CAS 471-34-1), CaCO3
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: NOT typically classified as hazardous beyond particulate dust
  • NOT on Korea TCCA Toxic Chemicals list
  • NOT on Korean Drug Management Act precursor list
  • Korean Customs Service (KCS) HS code: 251710 or 283650
  • **Korean Food Code food additive** (verify against MFDS / Korean Food Code before relying)
  • IARC: Not classified

Restrictions and conditions of use

  • No TCCA Toxic Chemicals Handling Permit required
  • KOSHA MSDS in Korean required at workplace (low hazard, respirable dust applies)
  • NO active Korean AD/CVD case on Chinese calcium carbonate currently
  • KCFTA preferential zero-duty applies (HS 251710 / 283650)
  • Korean Food Code compliance for food-grade use

Importer obligations

Korean importer of record must hold K-REACH registration. Korea has domestic GCC production from limestone quarries; structurally net-importer of high-purity PCC.

Required documents

  • K-REACH registration number on Korean side
  • Korean MSDS (with respirable particulate dust handling notes)
  • KCS declaration with HS 251710 or 283650
  • China-Korea FTA Form CO
  • Korean Food Code certification for food-grade use

Common compliance traps

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

  • Korea has domestic GCC production from limestone quarries; net-importer of high-purity PCC
  • KCFTA preferential zero-duty applies
  • NO active Korean AD/CVD case
  • NOT on TCCA Toxic Chemicals list
  • Korean Food Code food-additive compliance for food-grade use

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for calcium carbonate (gcc / pcc / limestone), see the CAS 471-34-1 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the calcium carbonate (gcc / pcc / limestone) 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

5 pages across the Sourzi moat

This term shows up in 4 regulatory pages, 1 CAS profiles. Sample backlinks per content type below.

Regulatory (4)

Plus 1 more regulatory pages.

CAS (1)

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