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
04243
Fosfato di potassio
meets analytical specification of Ph. Eur., NF, E340, anhydrous, 98-100.5% (calc. to the dried substance)
Sinonimo/i:
Fosfato di potassio prim., Potassio diidrogeno fosfato
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Informazioni su questo articolo
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Grado
anhydrous
Livello qualitativo
Saggio
98-100.5% (calc. to the dried substance)
Stato
crystalline
Qualità
meets analytical specification of Ph. Eur., NF, E340
Impurezze
residual solvents, complies
≤0.04% KMnO4 red. matter (as O)
≤0.2% in water insoluble matters
≤10 mg/kg heavy metals (as Pb)
Perdita
≤1% loss on drying, 130 °C
pH
4.2-4.5 (20 °C, 5%)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
Punto di fusione
252.6 °C (lit.)
Solubilità
H2O: soluble 4.5 parts
alcohol: insoluble
Densità
2.338 g/mL at 25 °C (lit.)
Anioni in tracce
chloride (Cl-): ≤0.001%
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg
Cationi in tracce
As: ≤1 mg/kg
Cd: ≤1 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Na: ≤0.1%
Pb: ≤1 mg/kg
Compatibilità
complies for appearance of solution
Stringa SMILE
[K+].OP(O)([O-])=O
[K+].OP(O)([O-])=O
InChI
1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
GNSKLFRGEWLPPA-UHFFFAOYSA-M
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Questo articolo | 60220-M | 60220 | 60229 |
|---|---|---|---|
| assay 98-100.5% (calc. to the dried substance) | assay 99.5-100.5% | assay 99.5-100.5% | assay 98-100.5% dry basis |
| grade anhydrous | grade ACS reagent, anhydrous, puriss. p.a. | grade ACS reagent, anhydrous, puriss. p.a. | grade anhydrous |
| Quality Level 200 | Quality Level - | Quality Level 100 | Quality Level 200 |
| form crystalline | form crystalline | form crystalline | form crystalline |
| density 2.338 g/mL at 25 °C (lit.) | density 2.338 g/mL at 25 °C (lit.) | density 2.338 g/mL at 25 °C (lit.) | density 2.338 g/mL at 25 °C (lit.) |
| pH 4.2-4.5 (20 °C, 5%) | pH 4.2-4.5 (20 °C, 5%) | pH 4.2-4.5 (20 °C, 5%) | pH - |
Applicazioni
Azioni biochim/fisiol
Nota sulla preparazione
Codice della classe di stoccaggio
13 - Non Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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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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