If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
221473
Potassium hydroxide
ACS reagent, ≥85%, pellets
Synonym(s):
Caustic potash
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Check Cart for Availability | $41.50 |
500 g | Check Cart for Availability | $79.90 |
1 kg | Check Cart for Availability | $149.00 |
2.5 kg | Check Cart for Availability | $260.00 |
6 x 500 g | Check Cart for Availability | $425.00 |
4 x 2.5 kg | Check Cart for Availability | $583.00 |
12 kg | Check Cart for Availability | $675.00 |
About This Item
grade
ACS reagent
Quality Segment
agency
suitable for EPA 1621, suitable for EPA 1633
vapor pressure
1 mmHg ( 719 °C)
assay
≥85%
form
pellets
impurities
≤0.001% N compounds, ≤2.0% K2CO3, 10-15% water
pH
~13.5 (25 °C, 5.6 g/L)
mp
361 °C (lit.)
solubility
water: soluble
anion traces
chloride (Cl-): ≤0.01%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.003%
cation traces
Ca: ≤0.005%, Fe: ≤0.001%, Mg: ≤0.002%, Na: ≤0.05%, Ni: ≤0.001%, heavy metals: ≤0.001% (by ICP)
application(s)
PFAS testing
storage temp.
room temp
SMILES string
[OH-].[K+]
InChI
1S/K.H2O/h;1H2/q+1;/p-1
InChI key
KWYUFKZDYYNOTN-UHFFFAOYSA-M
General description
Application
- Conversion of nitriles to amide in tert-butanol.
- Cross-coupling of aryl halides with different sulfur-, oxygen- and nitrogen-based nucleophiles in dimethyl sulfoxide.
- As an activator for the preparation of activated carbons from corn cobs.
- As a base for the N-alkylation of nitrogen heterocycles in polyethylene glycol-ether solvents.
- Synthesis of (S)-1-(4-benzyl-2-thioxothiazolidin-3-yl)propan-1-one from (S)-phenylalaninol.
- To catalyze the polymerization of propylene oxide.
1 of 1
This Item | |||
|---|---|---|---|
| form pellets | form pellets | form pellets | form pellets |
| assay ≥85% | assay ≥85% KOH basis | assay 99.99% trace metals basis (Purity excludes sodium content.) | assay ≥85% KOH basis |
| solubility water: soluble | solubility water: soluble ((1,130 g/l (68 °F / 20 °C)) | solubility water: soluble | solubility H2O: 1 M, clear, colorless |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade - | grade semiconductor grade | grade - |
| anion traces chloride (Cl-): ≤0.01%, sulfate (SO42-): ≤0.003%, phosphate (PO43-): ≤5 ppm | anion traces - | anion traces - | anion traces chloride (Cl-): ≤0.01%, sulfate (SO42-): ≤0.003% |
Still not finding the right product?
Explore all of our products under Potassium hydroxide
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
Storage Class
8A - Combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-