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.
|
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 8, 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
|