CAS 7681-11-0 · K-REACH · Republic of Korea

Potassium iodide (KI) under K-REACH

KI · 碘化钾

Status: Registered. Potassium iodide is registered under K-REACH. **Drug Precursor scope determination under Korean Act on Control of Narcotics (마약류 관리에 관한 법률) MFDS + Ministry of Justice may apply to KI as iodine salt** (verify exact category + concentration threshold against https://www.mfds.go.kr/ before invoicing). NO active Korean AD/CVD case on Chinese-origin potassium iodide. KCFTA preferential zero-duty applies for Chinese-origin imports. **MFDS-approved KI tablets for nuclear-incident radiation prophylaxis distributed under Korean National Disaster Stockpile** (verify against https://www.mfds.go.kr/ before relying); **MFDS food additive code for iodised salt fortification** (verify against current Korean Food Code before relying); **KP (Korean Pharmacopoeia) monograph for pharma-grade KI tablets + expectorant**.

K-REACH treats potassium iodide as a registered substance with **Drug Precursor scope-determination overlay under Korean Act on Control of Narcotics (verify against MFDS + Ministry of Justice)**. **MFDS-approved KI tablets for nuclear-incident radiation prophylaxis (Korean National Disaster Stockpile) + MFDS food additive iodised salt fortification + KP pharma-grade overlay**. **KI distinguishing pattern across all 5 regimes**: Production via I2 + KOH or KIO3 reduction; iodine feedstock from Chilean caliche-ore brines (SQM Atacama dominant) + Japanese / US Oklahoma gas-well brines (China is structurally a net-importer of elemental iodine but a major KI producer); iodised-salt fortification ~50% of global consumption (E916 EU + 21 CFR 184 FDA + GB 14880 / GB 26878 China + FSANZ Standard 2.10.2 Australia + MFDS Korean Food Code); pharma thyroid blocker for nuclear-incident radiation prophylaxis (Council Directive 2013/59/Euratom EU + HHS Strategic National Stockpile US + ChP China + National Medical Stockpile Australia + Korean National Disaster Stockpile); expectorant + animal-feed (EDDI alternative) + photographic emulsion downstream chains; light hazard profile (Eye Irrit. 2 + STOT RE 1 thyroid chronic high-dose) + IARC not classified + NOT regulated as dangerous goods at solid form.

Listing and threshold

Substance Potassium iodide (KI) (CAS 7681-11-0), KI
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: Eye Irrit. 2 + STOT RE 1 thyroid chronic high-dose (verify against current MoE / NIER GHS before relying)
  • **Drug Precursor scope determination under Korean Act on Control of Narcotics (마약류 관리에 관한 법률)** (verify exact category + concentration threshold against https://www.mfds.go.kr/ before relying)
  • NOT typically on Korea TCCA Toxic Chemicals list (verify against the current TCCA Toxic Chemicals list at https://www.nics.go.kr/ before relying)
  • Korean Customs Service (KCS) HS code: 283120
  • **KP (Korean Pharmacopoeia) monograph** for pharma-grade KI tablets + expectorant
  • **MFDS-approved KI tablets for nuclear-incident radiation prophylaxis** (Korean National Disaster Stockpile) (verify against https://www.mfds.go.kr/)
  • **MFDS food additive code for iodised salt fortification** (verify against current Korean Food Code)
  • IARC: Not classified

Restrictions and conditions of use

  • **Drug Precursor scope determination required under Korean Act on Control of Narcotics** (verify against MFDS + Ministry of Justice before invoicing)
  • KOSHA MSDS in Korean required at workplace (light hazard profile + thyroid chronic high-dose)
  • NO active Korean AD/CVD case on Chinese-origin potassium iodide
  • KCFTA preferential zero-duty applies (HS 283120)
  • **MFDS therapeutic KI tablets + food additive iodised salt overlay**

Importer obligations

Korean importer of record must hold K-REACH registration + **Drug Precursor scope determination (MFDS + Ministry of Justice)**. Korea is a significant KI consumer market with both domestic production and Chinese-origin import dependency for iodised-salt + pharma + photographic sectors.

Required documents

  • K-REACH registration number on Korean side
  • **Drug Precursor scope determination (MFDS + Ministry of Justice)** per Korean Act on Control of Narcotics
  • Korean MSDS (Eye Irrit. 2 + STOT RE 1 thyroid chronic high-dose)
  • KCS declaration with HS 283120
  • China-Korea FTA Form CO
  • KP monograph documentation where pharma-grade
  • Korean Food Code documentation where iodised-salt-fortification grade

Common compliance traps

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

  • **Drug Precursor scope determination required under Korean Act on Control of Narcotics (verify against MFDS + Ministry of Justice)**
  • KCFTA preferential zero-duty applies
  • NO active Korean AD/CVD case
  • NOT typically on TCCA Toxic Chemicals list
  • **MFDS-approved KI tablets for nuclear-incident radiation prophylaxis (Korean National Disaster Stockpile) + MFDS food additive iodised salt fortification + KP pharma-grade overlay**
  • **Korea is a significant KI consumer market** with both domestic production and Chinese-origin import dependency

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for potassium iodide (ki), see the CAS 7681-11-0 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the potassium iodide (ki) 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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