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%
Scegli un formato
Informazioni su questo articolo
Vai a
Grado
ACS reagent
Livello qualitativo
Tensione di vapore
1.3 hPa ( 885 °C)
Saggio
≥99.0%
Stato
crystalline powder
powder, crystals or chunks
Impurezze
≤0.01 meq/g Titr. base
≤0.03 meq/g Titr. acid
≤0.1% K2SiF6
pH
8-9 (20 °C, 50 g/L)
Punto di fusione
858 °C (lit.)
Anioni in tracce
chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.005%
Cationi in tracce
Fe: ≤0.001%
Na: ≤0.2%
heavy metals: ≤0.001% (by ICP)
Stringa SMILE
[F-].[K+]
InChI
1S/FH.K/h1H;/q;+1/p-1
NROKBHXJSPEDAR-UHFFFAOYSA-M
Cerchi prodotti simili? Visita Guida al confronto tra prodotti
1 of 4
Questo articolo | 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% |
Applicazioni
Avvertenze
Danger
Indicazioni di pericolo
Classi di pericolo
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1
Codice della classe di stoccaggio
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Scegli una delle versioni più recenti:
Possiedi già questo prodotto?
I documenti relativi ai prodotti acquistati recentemente sono disponibili nell’Archivio dei documenti.
-
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?
-
Active Filters
Il team dei nostri ricercatori vanta grande esperienza in tutte le aree della ricerca quali Life Science, scienza dei materiali, sintesi chimica, cromatografia, discipline analitiche, ecc..
Contatta l'Assistenza Tecnica