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60220

Sigma-Aldrich

Phosphate de potassium monobasic

buffer substance, anhydrous, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 99.5-100.5%

Synonyme(s) :

Dihydrogénophosphate de potassium, Phosphate de potassium prim., Phosphate monopotassique

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About This Item

Formule linéaire :
KH2PO4
Numéro CAS:
7778-77-0
Poids moléculaire :
136.09
Numéro CE :
231-913-4
Numéro MDL:
MFCD00011401
Code UNSPSC :
12352300
ID de substance PubChem :
329758828
Nomenclature NACRES :
NA.21
Le tarif et la disponibilité ne sont pas disponibles actuellement.

Qualité

ACS reagent
anhydrous
puriss. p.a.

Niveau de qualité

100

Agence

reag. ISO
reag. Ph. Eur.

Essai

99.5-100.5%

Forme

crystalline

Impuretés

≤0.001% total nitrogen (N)

Perte

≤0.2% loss on drying, 105 °C

pH

4.2-4.5 (20 °C, 5%)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

Pf

252.6 °C (lit.)

Solubilité

water: 0.5 g/10 mL, clear, colorless to light yellow

Densité

2.338 g/mL at 25 °C (lit.)

Traces d'anions

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg

Traces de cations

As: ≤0.5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤15 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
heavy metals: ≤0.001% (by ICP)

Chaîne SMILES 

[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

Clé InChI

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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Description générale

Potassium phosphate is widely used in buffers to prepare biological samples and examine biological interactions.[1]

Application

Potassium phosphate monobasic has been used:
  • to prepare the working luminol solution to study the prooxidant activity in the chemiluminescent system luminol–H2O2[2]
  • in phosphate buffer saline (PBS) to culture embryonic stem cells (ESCs) and generate embryoid bodies[3]
  • in PBS to prepare polydimethylsiloxane (PDMS) substrate[4]

Code de la classe de stockage

11 - Combustible Solids

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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Certificats d'analyse (COA)

Lot/Batch Number
SDBB2801
SDBB2168
STBL3942
SDBB0685
MKCL2140

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Prooxidant potential of \_2 nanoparticles towards hydrogen peroxide
Sozarukova MM, et al.
Nanosystems: Physics, Chemistry, Mathematics, 12(3), 283-290 (2021)
John E Schiel et al.
Talanta, 65(2), 495-500 (2008-10-31)
Potassium phosphate buffer is often used in methods such as equilibrium dialysis, high performance liquid chromatography (HPLC), and affinity capillary electrophoresis (ACE) for characterizing the binding of drugs and hormones with proteins or other ligands within the body. In these
Jules D P Valentin et al.
Journal of colloid and interface science, 552, 247-257 (2019-05-28)
Many materials used in the medical settings such as catheters and contact lenses as well as most biological tissues are not purely elastic, but rather viscoelastic. While substrate elasticity has been investigated for its influence on bacterial adhesion, the impact
Sonal Saxena et al.
MethodsX, 7, 101073-101073 (2020-10-22)
Investigation on the effects of disease-associated mutations on neurodevelopment is an essential approach to understand the molecular basis of neurological disorders and can be achieved by generating suitable animal models. However, some of the mutations preclude development of animal models
Casper Skovgaard et al.
Journal of applied physiology (Bethesda, Md. : 1985), 117(10), 1097-1109 (2014-09-06)
The purpose of this study was to examine whether speed endurance training (SET, repeated 30-s sprints) and heavy resistance training (HRT, 80-90% of 1 repetition maximum) performed in succession are compatible and lead to performance improvements in moderately trained endurance
Afficher tous les articles scientifiques apparentés

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

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