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795488

Sigma-Aldrich

Fosfato di potassio

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99%

Sinonimo/i:

Fosfato di potassio prim., Fosfato monopotassico, Potassio diidrogeno fosfato

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About This Item

Formula condensata:
KH2PO4
Numero CAS:
Peso molecolare:
136.09
Numero CE:
Numero MDL:
Codice UNSPSC:
12352302
ID PubChem:
NACRES:
NA.21

Grado

ACS reagent
anhydrous

Livello qualitativo

Nome Commerciale

Redi-Dri

Saggio

≥99%

Forma fisica

powder or crystals

Qualità

free-flowing

Impurezze

≤0.01% Insoluble matter

Perdita

≤0.2% loss on drying, 105°C

pH

4.1-4.5 (25 °C, 5%)

pKa (25 °C)

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

Punto di fusione

252.6 °C (lit.)

Densità

2.338 g/mL at 25 °C (lit.)

Anioni in tracce

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.003%

Cationi in tracce

Fe: ≤0.002%
Na: ≤0.005%
heavy metals: ≤0.001% (by ICP)

Stringa SMILE

[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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Categorie correlate

Descrizione generale

Potassium phosphate monobasic (monopotassium orthophosphate) is a water soluble inorganic salt. Its standard enthalpy of formation has been reported to be −376.1 kcalmol-1. It acts a starting material in the synthesis of potassium metaphosphate.

Redi-Dri technology eliminates clumping and the need for complicated procedures to keep your salts free-flowing. Keeping your salts dry helps improve your results by giving accurate measurements and easier-to-handle salts and buffers. Rather than drying your salts in an oven or desiccator or breaking them apart manually, Redi-Dri ensures that your salts will remain easy-to-use for months without worrying about anti-caking agents. Even after repeated openings you can be assured that your results are always accurate. Redi-Dri saves you time, energy and money by keeping your salts usable for longer!

Applicazioni

Potassium phosphate monobasic has been used in the preparation of phosphate buffer and phosphate buffered saline (PBS). It has also been used in the preparation of PEG1000 (polyethylene glycol)/potassium phosphate aqueous two-phase systems (ATPS).

Caratteristiche e vantaggi

  • Increased efficiency – Eliminate time and effort of loosening hardened powders
  • Safety – Avoid risks of using tools of force to break up clumps
  • Economy – Faster preparation and solvation increase productivity and reduce costs
  • Assured quality – Excellent, expert-tested quality with no anti-caking agents
  • Flexible volumes – Available from research amounts to scale-up quantities

Note legali

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Codice della classe di stoccaggio

11 - 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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Articoli

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Protocolli

Folic acid vs. folate differences and biological activities; implications in fortified foods and supplements for human health.

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