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Potassium Hydroxide (KOH)

Buy potassium hydroxide (KOH) online: 7 products, 1 Quart to 330 Gallon. Ships from Texas in 1–2 business days with the SDS on every product page. From $16.50.

Products
7
Sizes
1 Quart to 330 Gallon

Which potassium hydroxide (KOH) grade do I need?

Every grade we stock, with the size range and the starting price. Prices are per container and update with the catalog.

ProductStrengthGradeSizesFromBuy
Potassium Hydroxide Flakes ACS GradeACS Reagent Grade2 lbs. to 55 Lbs.$20.00Buy
Potassium Hydroxide (KOH) Technical GradeTechnical Grade2 lbs. to 55 Lbs.$17.95Buy
Potassium Hydroxide 30% Solution Technical Grade30%Technical Grade1 Quart to 330 Gallon$19.00Buy
Potassium Hydroxide 45% Solution ACS Grade45%ACS Reagent Grade1 Quart to 330 Gallon$29.50Buy
Potassium Hydroxide 25% Solution Technical Grade25%Technical Grade1 Quart to 330 Gallon$16.50Buy
Potassium Hydroxide 45% Solution Technical Grade45%Technical Grade1 Quart to 330 Gallon$22.50Buy

7 products

Potassium Hydroxide (KOH) products

About Potassium Hydroxide (KOH)

Buy potassium hydroxide (KOH, CAS 1310-58-3) from Alliance Chemical in technical and ACS grades. KOH is a strong caustic base used in alkaline cleaning, electrolysis, soap and detergent production, biodiesel processing, pH adjustment, and laboratory reagent work.

Products In This Collection

This collection includes potassium hydroxide flakes and grade-specific KOH products for industrial and laboratory buyers. ACS Grade is selected for reagent work, while Technical Grade supports production, maintenance, and process applications.

Common Applications

  • Electrolysis and green hydrogen: KOH is used as an alkaline electrolyte in selected electrolysis systems and related research or production workflows.
  • Soap and detergent production: Potassium hydroxide supports liquid soap, soft soap, and specialty detergent manufacturing.
  • Alkaline cleaning: KOH dissolves greases and organic soils in compatible cleaning systems and process equipment.
  • Laboratory reagent use: ACS KOH is used for titration, pH adjustment, and reagent preparation where grade control matters.

Grade & Selection Notes

Choose ACS Grade KOH for reagent or analytical work and Technical Grade for general industrial cleaning, process, and production applications. Confirm whether your process requires flakes, solution preparation, or a specific assay.

Safety & Handling

Potassium hydroxide is highly corrosive and generates heat when dissolved. Add KOH slowly to water, use PPE, and keep away from acids and incompatible metals. Review the Safety Data Sheets before use and follow your site-specific handling procedure.

Why Buy From Alliance Chemical

Most in-stock KOH orders ship in 1-2 business days. SDS and lot-specific COA support are available for grade-sensitive orders.

Related: Bases & Caustics, Hydroxides, Sodium Hydroxide, Lab Chemicals.

Frequently Asked Questions

Where can I buy potassium hydroxide?
Here. Alliance Chemical stocks potassium hydroxide flakes in Technical and ACS Reagent Grade (2 lb, 4 lb and 55 lb) and 25%, 30% and 45% solutions from 1 quart to 330-gallon totes, shipped from Texas with the SDS on every product page.
Do I need a license to buy potassium hydroxide?
No. There is no federal license or permit to buy potassium hydroxide in the United States, and it is not a DEA-listed chemical. Alliance sells it online to businesses and individuals. It ships ground only as a DOT Class 8 corrosive, UN1813 for flakes and UN1814 for solutions, and checkout shows the carrier's rate for your address.
Flakes or solution: which potassium hydroxide should I buy?
Flakes when you want to make your own solution, store it dry or ship less weight. A ready solution when you dose by volume or want to skip the heat of dissolving. 45% is the standard concentrated liquid; 25% and 30% suit dilute cleaning and neutralization.
Is potassium hydroxide for sale in bulk?
Yes. 55 lb bags of flakes and 55-gallon drums, 275-gallon and 330-gallon totes of solution ship by LTL freight. Use the quote form on any potassium hydroxide product page for multi-drum or recurring supply.
How is potassium hydroxide shipped?
Flakes as UN1813 and solutions as UN1814, Class 8 corrosive, Packing Group II, by hazmat ground in UN-rated containers packed by staff trained to 49 CFR 172.704. Orders leave our Texas warehouse in 1 to 2 business days.
What is potassium hydroxide used for?
KOH is used in alkaline cleaning, electrolysis, liquid soap production, biodiesel processing, pH adjustment, and reagent preparation.
How is KOH different from sodium hydroxide?
Both are strong caustic bases. KOH is often selected for liquid soap, electrolyte, and potassium-specific chemistry, while NaOH is common for general caustic soda applications.
Is potassium hydroxide corrosive?
Yes. KOH is highly corrosive and requires gloves, eye and face protection, compatible containers, and careful dilution practices.
Can I make a KOH solution from flakes?
Yes, but dissolution is exothermic. Add flakes slowly to water with mixing and cooling as needed.
Is ACS Grade KOH available?
Yes. ACS Grade KOH is available for reagent and laboratory applications where specification control is required.
Forklift moving pallets in a warehouse

Stock footage.

How it ships.

Regulated products are packed, marked, and labeled for hazmat transport, from one quart to a pallet of drums.

  • Most stocked orders ship in 1–2 business daysOrder cutoff: Mon-Thu 2 PM CT / Fri 12 PM CT
  • Hazmat packing, marking, and labelingPacked by staff trained under DOT rule 49 CFR 172.704
  • UPS Ground for bottles, jugs, and up to three pailsLTL freight for four or more pails, drums, and totes. Liftgate on request.
  • Ships with
  • UPS
  • FedEx Freight
  • ABF Freight
  • R+L Carriers
  • Saia
  • Southeastern Freight Lines
  • XPO

Buying for a company or agency?

Pay by card at the listed price, or order on Net 30 terms once your credit is approved. For NSN and contract requirements, send an RFQ.

CAGE code
1LT50
UEI
DCTCZDY3BLD3
Primary NAICS
424690
Ownership
Woman-Owned
Federal supply
DLA Supplier
Terms
Net 30 on approved credit, W-9 on request
Gloved hands strapping four blue chemical drums to a pallet at a warehouse loading dock
Illustration.

Safety data sheets and certificates.

Find an SDS or TDS by product name or CAS number. Certificates of analysis are free on request.

Find an SDS or COA

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