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/449/386/product-dating-information-mk.pdf
Wichtige Dokumente
179922
Kaliumphthalat, einbasisch
ACS reagent, acidimetric standard
Synonym(e):
KHP, Kaliumbiphthalat, Kaliumhydrogenphthalat, Phthalsäure Kaliumsalz
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About This Item
Empfohlene Produkte
Qualität
ACS reagent
acidimetric standard
Qualitätsniveau
Assay
99.95-100.05% dry basis
Form
crystals
Verunreinigungen
≤0.002% S compounds
≤0.003% Cl compounds
≤0.005% insolubles
pH-Wert
4.00-4.02 (25.0 °C±0.2 °C, 0.05 M)
mp (Schmelzpunkt)
295-300 °C (dec.) (lit.)
Kationenspuren
Fe: ≤5 ppm
Na: ≤0.005%
heavy metals: ≤5 ppm (by ICP)
Funktionelle Gruppe
carboxylic acid
SMILES String
[K+].OC(=O)c1ccccc1C([O-])=O
InChI
1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
InChIKey
IWZKICVEHNUQTL-UHFFFAOYSA-M
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Verwandte Kategorien
Lagerklassenschlüssel
13 - Non Combustible Solids
WGK
WGK 1
Flammpunkt (°F)
387.1 °F - Pensky-Martens closed cup
Flammpunkt (°C)
197.3 °C - Pensky-Martens closed cup
Persönliche Schutzausrüstung
Eyeshields, Gloves, type N95 (US)
Hier finden Sie alle aktuellen Versionen:
Analysenzertifikate (COA)
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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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