CAS reference

Potassium hydroxide

氢氧化钾

Solid (90% min) and 50% solution forms both common. KOH is more expensive per equivalent alkalinity than NaOH so non-K-specific applications default to NaOH. K-specific uses (potassium soaps, biodiesel, alkaline batteries) drive the demand for KOH. Major Chinese capacity at Befar, OCI, and Anhui Hongsifang.

CAS 1310-58-3 ·KOH ·MW 56.108 g/mol ·HS 281520

Identifiers

Synonyms
Caustic potash, Lye (potassium)
Formula
KOH
Molecular weight
56.108 g/mol
SMILES
[K+].[OH-]
InChIKey
KWYUFKZDYYNOTN-UHFFFAOYSA-M
HS code (6-digit)
281520

Transport and hazard profile

Transport classification, UN number UN1813, IMDG Class 8, Packing Group II.

GHS hazard statements, Danger. H-codes, H290, H302, H314. Refer to the substance SDS Section 2 for the full classification.

Regulatory profile across 5 jurisdictions

Verified against ECHA, US EPA TSCA Inventory, MEE China IECSC, NIER K-REACH, and AICIS AIIC. Last verification 2026-04-30. Confirm with the regulator portal before any shipping decision.

EU REACH
Listed
US TSCA
Listed
China IECSC
Listed
Korea K-REACH
Listed
Australia AICIS
Listed

Look up other substances at the REACH / TSCA cross-jurisdiction checker.

Common applications

  • · Potassium soaps and detergents
  • · Biodiesel (transesterification catalyst)
  • · Alkaline battery electrolyte
  • · Fertiliser intermediate

Typical Chinese supplier geography

Major Chinese capacity sits in Shandong, Anhui. Coastal producers (Shandong, Jiangsu, Zhejiang) typically dominate export volume because of port access; inland producers (Inner Mongolia, Xinjiang, Shaanxi) compete on raw-material cost but add inland-rail or trucking cost to reach the coast.

Sourcing documentation chain

Every shipment of Potassium hydroxide from China should include a per-batch COA, a current SDS per GB/T 17519 on the China side and the destination jurisdiction's standard on the import side, a packing list, a bill of lading, and a certificate of origin plus an MSA China DG packing certificate. For Incoterms reference see FOB, CIF, and CFR.

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Where this substance shows up across Sourzi

Referenced in

12 pages across the Sourzi moat

This term shows up in 5 regulatory pages, 7 chemical parks. Sample backlinks per content type below.

Regulatory (5)

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Park (7)

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