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P5504

Potassium phosphate dibasic trihydrate

ReagentPlus®, ≥99.0%

Potassium phosphate dibasic trihydrate

Synonym(s):

Dipotassium hydrogen phosphate trihydrate, Dipotassium phosphate, di-Potassium hydrogen phosphate trihydrate

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Pack SizeSKUAvailabilityPrice
100 g

Available to ship TODAYfromMILWAUKEE

$50.30
500 g

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$132.00
1 kg

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$257.00
5 kg

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$858.00
10 kg

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$1,310.00

About This Item

Linear Formula:
K2HPO4 · 3H2O
CAS Number:
Molecular Weight:
228.22
NACRES:
NA.25
PubChem Substance ID:
UNSPSC Code:
12161700
EC Number:
231-834-5
MDL number:

$50.30


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Quality Level

product line

ReagentPlus®

assay

≥99.0%

form

powder or crystals

pH

9.2-9.4 (25 °C, 50 g/L)

solubility

water: 100 mg/mL, clear, colorless

storage temp.

room temp

SMILES string

O.O.O.[K+].[K+].OP([O-])([O-])=O

InChI

1S/2K.H3O4P.3H2O/c;;1-5(2,3)4;;;/h;;(H3,1,2,3,4);3*1H2/q2*+1;;;;/p-2

InChI key

XQGPKZUNMMFTAL-UHFFFAOYSA-L

General description

Potassium phosphate solution have very high buffering capacity that is widely used in molecular biology, biochemistry, and chromatography. Potassium phosphate dibasic trihydrate is a key component of potassium phosphate buffer, phosphate-buffered saline (PBS), and phosphate-buffered EDTA (PBE). It is extensively used in the preparation of biological samples for various biological experiments. Potassium phosphate buffer is also used in methods such as equilibrium dialysis, high-performance liquid chromatography (HPLC), and affinity capillary electrophoresis (ACE) to study the characteristics of drug-protein interactions in the body.[1] Potassium phosphate buffer solutions consist of mixtures of the potassium phosphate monobasic and potassium phosphate dibasic forms.

Application

Potassium phosphate dibasic trihydrate has been used in the preparation of potassium phosphate buffer for the resuspension of polyelectrolyte capsules.[2] It has also been used as a buffer during glutaminase‑1 (GLS-1) enzyme assay and GLS-2 enzyme assay.[3]

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

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This Item
60349P9666529567-M
assay

≥99.0%

assay

≥99.0% (T)

assay

≥99%

assay

≥98% (titration)

product line

ReagentPlus®

product line

-

product line

-

product line

-

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

form

powder or crystals

form

crystals

form

powder or crystals

form

solid

pH

9.2-9.4 (25 °C, 50 g/L)

pH

9.1-9.4 (25 °C, 50 mg/mL in H2O)

pH

9.2-9.4 (25 °C, 50 g/L)

pH

-

solubility

water: 100 mg/mL, clear, colorless

solubility

-

solubility

water: 100 mg/mL, clear, colorless

solubility

water: soluble


Still not finding the right product?


Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



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Protocols

Enzymatic Assay of Superoxide Dismutase

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Interaction between Potassium Phosphate Buffer Solution and Modeling Cell Membrane Investigated by Sum Frequency Generation Vibrational Spectroscopy
Weilai Y, et al.
Chinese Journal of Chemical Physics, 28(4), 518-524 (2015)
Daniel Valdepérez et al.
Journal of colloid and interface science, 474, 1-8 (2016-04-19)
Polyelectrolyte hollow capsules are versatile platforms typically used for encapsulation of a wide variety of macromolecules in their cavity. The polymer shell of these capsules as composed by alternating layers of oppositely charged polyelectrolytes also allows for adding additional functionalities.
Imidazolium-based Ionic Liquids as Adjuvants to Form Polyethylene Glycol with Salt Buffer Aqueous Biphasic Systems
Santos JHPM, et al.
Journal of Chemical and Engineering Data, 65(8), 3794?3801-3794?3801 (2020)



Global Trade Item Number

SKUGTIN
P5504-100G04061835547760
P5504-5KG04061834391791
P5504-1KG04061835547777
P5504-10KG04061833623282
P5504-500G04061835547784

Questions

1–2 of 2 Questions  
  1. 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/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. 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

      Helpful?

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