Potassium Hydroxide, Dry

Dry potassium hydroxide is produced by evaporating the water from liquid potassium hydroxide (LKOH). It is sold in flake and walnut (briquette) forms. Flake potassium hydroxide is literally "flaked" off a large cooling wheel used to solidify the molten product. Walnut potassium hydroxide is made by compacting flake product into walnut-shaped briquettes for ease and efficiency of use.

The major end uses for dry product are similar to liquid product and include the following industries: petroleum, potassium chemicals, gas purification, industrial soaps, drugs, pharmaceuticals, flavors and fragrances, alkaline batteries, organic chemicals and dyestuffs. The primary end use for walnut-shaped dry product is in the natural gas industry (removal of sulfer compounds in a purification process). No published end use breakdown is available.

MSDS
Material safety data for dry potassium hydroxide in Adobe .PDF format		 Safety & Handling
Specifications
for potassium hydroxide		 Physical & Chemical
Properties
of potassium hydroxide

Caustic Potash
(Potassium Hydroxide, KOH)
Standard Flake Grade
Parameters
Specifications
Reference Methods
Total Alkalinity as Weight % KOH
90.0 Min.
ASTM: E -291.90
Weight % K2CO3
0.44 Max.
AOAC: 920.194
Weight % Na
0.50 Max.
SMEWW: 3500-Na:C
PPM KCl
150 Max.
SMEWW: 4500-Cl-:F
PPM K2SO4
13 Max.
SMEWW: 4500-SO42-:B
PPM Fe
3 Max.
SMEWW: 3500-Fe:C
PPM Ni
4 Max.
SMEWW: 3120
PPM Hg
0.1 Max.
SMEWW: 3500-Hg:B
CAS Registry Number: 1310-58-3

Note: This product meets the requirements for the following standards: Food Chemicals Codex, The National Formulary (The United States Pharmacopoeia), Kosher.
Date of last Revision: December  9, 2003

Caustic Potash
(Potassium Hydroxide, KOH)
Walnut Grade
Parameters
Specifications
Reference Methods
Total Alkalinity as Weight % KOH
90.0 Min.
ASTM: E -291.90
Weight % K2CO3
0.5 Max.
AOAC: 920.194
Weight % Na
0.65 Max.
SMEWW: 3500-Na:C
PPM KCl
150 Max.
SMEWW: 4500-Cl-:F
PPM K2SO4
13 Max.
SMEWW: 4500-SO42-:B
PPM Fe
15 Max.
SMEWW: 3500-Fe:C
PPM Ni
5 Max.
SMEWW: 3120
PPM Hg

0.1 ppm Max.
SMEWW: 3500-Hg:B
Bulk Density 0.8 - 0.9 Kg/L  
CAS Registry Number: 1310-58-3

Note: This product is Kosher Certified.
Date of last Revision: December 8, 2003