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
449148
Potassium fluoride
anhydrous, powder, ≥99.9% trace metals basis
Sinónimos:
Potassium monofluoride, Potassium monofluoride (KF)
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US$ 141,00
US$ 487,00
US$ 141,00
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Quality Level
grade
anhydrous
assay
≥99.9% trace metals basis
form
powder
reaction suitability
core: potassium
impurities
≤1000.0 ppm Trace Metal Analysis
mp
858 °C (lit.)
solubility
water: soluble (923 g/l at 18 °C (64 °F))
cation traces
Cr: 1.6 ppm
Cs: 7.3 ppm
Cu: 0 ppm
Fe: 7.9 ppm
Li: 0.4 ppm
Mg: 0.3 ppm
Na: 514.2 ppm
Rb: 44.4 ppm
SMILES string
[F-].[K+]
InChI
1S/FH.K/h1H;/q;+1/p-1
InChI key
NROKBHXJSPEDAR-UHFFFAOYSA-M
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Este artículo | 229814 | 60240 | 60239 |
|---|---|---|---|
| form powder | form powder and chunks | form powder or crystals | form powder or crystals |
| assay ≥99.9% trace metals basis | assay ≥99.97% trace metals basis | assay ≥99.0% (F) | assay ≥99.0% (F) |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| grade anhydrous | grade - | grade - | grade - |
| impurities ≤1000.0 ppm Trace Metal Analysis | impurities ≤300.0 ppm Trace Metal Analysis | impurities - | impurities ≤0.01% free acid (as HF), ≤0.01% free alkali (as KOH), ≤0.1% potassium fluoro silicate (K2SiF6) |
| mp 858 °C (lit.) | mp 858 °C (lit.) | mp 858 °C (lit.) | mp 858 °C (lit.) |
General description
Application
- To fabricate CIGS thin films solar cells. Efficiency increased by up to 21.7% after KF postdeposition treatment. This was due to the formation of a K-containing layer on the CIGS surface, which resulted in increased surface reactivity due to the formation of a bilayer structure in which a K—In—Se species covers the CIGSe compound.[3]
- To fabricate 2D vanadium carbide MXene for supercapacitor electrodes.[4]
- To synthesize sulfonyl fluoride through electrochemical oxidative coupling.[5]
- As an electrolyte additive for Li-ion batteries.[6]
- As a catalyst for ring-opening fluorination of cyclic thioethers.[1]
- To synthesize solid base catalysts, KF/Ca−Mg−Al hydrotalcite for the production of Biodiesel via transesterification reactions.[2]
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1
Clase de almacenamiento
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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
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