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
402931
Potassium fluoride
ACS reagent, ≥99.0%
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A propos de cet article
Passer à
Qualité
ACS reagent
Pression de vapeur
1.3 hPa ( 885 °C)
Essai
≥99.0%
Forme
crystalline powder
powder, crystals or chunks
Impuretés
≤0.01 meq/g Titr. base
≤0.03 meq/g Titr. acid
≤0.1% K2SiF6
pH
8-9 (20 °C, 50 g/L)
Pf
858 °C (lit.)
Traces d'anions
chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.005%
Traces de cations
Fe: ≤0.001%
Na: ≤0.2%
heavy metals: ≤0.001% (by ICP)
Chaîne SMILES
[F-].[K+]
InChI
1S/FH.K/h1H;/q;+1/p-1
Clé InChI
NROKBHXJSPEDAR-UHFFFAOYSA-M
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Cet article | 449148 | 229814 | 1.04994 |
|---|---|---|---|
| form crystalline powder, powder, crystals or chunks | form powder | form powder and chunks | form solid |
| assay ≥99.0% | assay ≥99.9% trace metals basis | assay ≥99.97% trace metals basis | assay ≥99.0% (precipitation titration) |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 300 |
| grade ACS reagent | grade anhydrous | grade - | grade ACS reagent |
| impurities ≤0.01 meq/g Titr. base, ≤0.1% K2SiF6, ≤0.03 meq/g Titr. acid | impurities ≤1000.0 ppm Trace Metal Analysis | impurities ≤300.0 ppm Trace Metal Analysis | impurities ≤0.05% Free acid (as HF) |
| cation traces Fe: ≤0.001%, heavy metals: ≤0.001% (by ICP), Na: ≤0.2% | cation traces - | cation traces - | cation traces Fe: ≤0.001%, Na: ≤0.2%, excess alkali: ≤0.05% (as KOH), heavy metals (as Pb): ≤0.001% |
Application
Mention d'avertissement
Danger
Mentions de danger
Classification des risques
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1
Code de la classe de stockage
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
Classe de danger pour l'eau (WGK)
WGK 1
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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