






⚡ Elevate your lab game with premium KOH flakes — safety, purity, and power in one bottle!
Essential Depot Potassium Hydroxide Flakes deliver 2 lbs of high-purity (90%+) anhydrous KOH in a secure, resealable HDPE container. Manufactured in the USA via mercury-free electrolysis, these odorless, moisture-sensitive flakes dissolve rapidly with agitation, making them perfect for hydrogen welding, electrolytic applications, and analytical chemistry. Child-resistant packaging ensures safe storage, while batch-specific COAs provide trusted quality assurance.























































| ASIN | B001EDK0WK |
| Best Sellers Rank | #26,339 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #29 in Analytical Reagents |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,499) |
| Date First Available | August 16, 2008 |
| GHS health hazard | See SDS. |
| GHS physical hazard | See SDS. |
| Global Trade Identification Number | 00892647002024 |
| Hazard safety signal word | See SDS. |
| Is Discontinued By Manufacturer | No |
| Item Form | Dry, Solid, Flake |
| Item Volume | 2 Liters |
| Item Weight | 2 pounds |
| Item model number | KOH-2-FLAKES |
| Manufacturer | Essential Depot, Inc. |
| Manufacturer Part Number | FBA_KOH-2-FLAKES |
| Model | FBA_KOH-2-FLAKES |
| Package Information | Bottle |
| Product Dimensions | 8.75 x 3.5 x 3.5 inches |
| Special Features | Minimum 90% purity, any impurities result during the manufature process, anhydrous, deliquescent (dissolving in moisture absorbed from the atmosphere), dry, solid, flake, hygroscopic (attracting moisture) |
| UPC | 892647002024 |
M**W
Used In Hydrogen Welder, Great Product
Bought as the reactor for our hydrogen water welder, great price seems like a bottle will last about 8-10 full tank cycles (we use our water welder 24/7 in a wax mfg house). High quality, I recommend
T**Y
Excellent!!!
Excellent product and fast shipping
J**S
Worked Well for My Electrolysis Demonstration
This potassium hydroxide product worked well to demonstrate the decomposition of water into hydrogen and oxygen gas through electrolysis. Anyone handling chemicals like this should know to always add this product to the water and not the reverse because the possibility of "flashing" the solution explosively. If I need any more in the future, I would not hesitate to buy this product again.
E**J
This is a must when making liquid soap paste
I always use this to make my soap paste that I use in making liquid soap. I have always used this brand ever since I started making liquid soap many years ago. It is the best price, the quality is great and I trust the company. I believe it is the purest grade you can find. It is food grade which means it has the lowest parts per million of heavy metal impurities in it. Being made in the U.S. is what I look for also.
B**O
Great Product
I’ve used products from this company many times. This was my first time using their lye “flakes”. It did not work for me with my soap making. The soap would not trace using the hot or cold process methods. I believe the calculation must have been off, which make no sense as all ingredients are weighed. I switched back to the grandulars and no problem. This is a great product. But learn how to use it ahead of time.
A**Y
Perfect for soap making
High quality and worked out fine in my liquid soap! I did not get my first order on time (it got lost in the void between UPS and the post office "smartpost" isn't so smart) and wrote in to them and they immediately sent me out another, free of charge and via a more expensive shipping method that takes USPS out of the equation, and told me that if the first one surfaced to go ahead and keep it. I did eventually receive the second one and I have no idea if I'll be able to even make enough liquid soap in my lifetime to use up all this lye but between a high quality product and high quality customer service (as well as really fast shipping turnaround time if you take smartpost out of the mix) I couldn't be happier. I wish there were another star to give. Top notch here.
W**3
Good stuff!
Using this for a HHO setup, works great.. do note that if you mix this in a gallon jug of distilled water the bottom of the jug will/can get very hot, almost to the point of softening the plastic.. DO NOT close the jug and shake it!! Also, do wear gloves and eye protection, this stuff WILL eat your skin or blind you if splashed on you.
C**E
Great product
Great product. Good for projects. Great value for the price.
A**R
Good and fast service
P**.
Excellent potassium hydroxide for soap making. Safely packed in sturdy, thick plastic container. It has child-proof cap and not easy to be opened. As per the MSDS available online, the purity is around 90%.
R**N
works for me good quality
Trustpilot
1 week ago
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