Potassium Hydroxide Flakes KOH 9 lb (9 x 1 lb) - Lab Grade

In this review the reviewer examines the Essential Depot Potassium Hydroxide flakes pack to see who benefits most from buying a multi-pack of anhydrous KOH. The bottom line is that this 9 lb set of nine 1 lb HDPE containers is aimed at hobby chemists and small-scale soap makers who need a reliable, resealable supply of dry potassium hydroxide with traceable quality documentation; the single biggest reason to buy is the combination of U.S. manufacture, minimum 90% purity, and convenient child-resistant containers that make repeated small-batch use straightforward.

Key Features

• Packaged per pound: Nine separate 1 lb HDPE containers keep portions fresh and reduce exposure during handling, which is practical for repeated small-batch work.
• Child-resistant cap: The resealable child proof cap improves safe storage between uses and helps limit moisture exposure to the hygroscopic flakes.
• U.S. manufacture and documentation: Made in the U.S.A. with SDS and batch-specific COA available on request for traceability and lab use.
• Production method: Manufactured by membrane electrolytic cells from potassium chloride, indicating an industrial production route without mercury-based processes.
• Form and handling: Supplied as anhydrous, deliquescent flakes that freely dissolve in water with agitation when used under proper conditions.

Who It's For

This product suits hobby chemists, liquid soap makers, small laboratories, and educators who need a moderate quantity of potassium hydroxide in manageable 1 lb containers and who value U.S. source and available COA documentation. The packaging is useful for anyone doing multiple small batches where resealable, child-resistant storage is an advantage.

It is not aimed at large-scale industrial users who require bulk drums or guaranteed higher purities beyond the stated minimum 90%, nor is it for food or nutritional use, as the product has no nutritional value and is sold as a reagent-grade chemical.

Pros & Cons

Pros

• Convenient 1 lb HDPE containers with resealable child-resistant caps for safer, repeated access.
• Produced in the U.S.A. with SDS and batch-specific COA available, supporting quality verification.
• Works well for liquid soap making and small lab applications due to functional flake form and solubility with agitation.

Cons

• Minimum 90% purity may be limiting for applications that need higher analytical-grade KOH.
• Hygroscopic and deliquescent nature requires careful moisture-free storage to maintain quality.

Specifications

Our Verdict

The Essential Depot 9 lb pack of Potassium Hydroxide flakes is a practical, cost-effective choice for soap makers, hobby chemists, and small labs who need manageable portions and documented origin. It is good value when U.S. manufacture, resealable child-resistant packaging, and available COA matter more than ultra-high purity; buyers who need analytical-grade or bulk industrial quantities should look elsewhere.

Frequently Asked Questions

Is this product suitable for soap making?
Yes, customers report it works well for liquid soap making when handled with proper safety and dissolution techniques.

Can I get a Certificate of Analysis for a batch?
Yes, SDS and batch-specific COA are available upon request and the supplier can provide the batch number.

How should the flakes be stored?
Store in a dry, airtight container away from moisture because the flakes are hygroscopic and deliquescent.