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795496

Kaliumphosphat

anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥98%

Synonym(e):

Dikaliumhydrogenphosphat, Dikaliumphosphat, sek.-Kaliumphosphat

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Größe/SKUVerfügbarkeitPreis
100 g
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€ 58,50
500 g
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€ 139,00
1 kg
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€ 209,00
2.5 kg
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€ 560,00

Über diesen Artikel

Lineare Formel:
K2HPO4
CAS-Nummer:
Molekulargewicht:
174.18
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-834-5
MDL number:
Assay:
≥98%
Grade:
ACS reagent, anhydrous
Form:
powder
Solubility:
water: soluble

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Quality Segment

grade

ACS reagent, anhydrous

agency

suitable for SM 5210

product line

Redi-Dri™

assay

≥98%

form

powder

quality

free-flowing

impurities

≤0.001% Nitrogen compounds (as N), ≤0.01% Insoluble matter

loss

≤1.0% loss on drying, 105°C

pH

8.5-9.6 (25 °C, 5% in solution)

pKa (25 °C)

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

solubility

water: soluble

anion traces

chloride (Cl-): ≤0.003%, sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%, Na: ≤0.05%, heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

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

InChI

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

InChI key

ZPWVASYFFYYZEW-UHFFFAOYSA-L

General description

Potassium phosphate dibasic is a useful biological buffer having a pH in the range of 8.5–9.6. Potassium phosphate is present in various forms: monobasic (KH2PO4), dibasic (KH2PO4), and tribasic (K3PO4). Potassium phosphate buffers are widely employed in equilibrium dialysis, high performance liquid chromatography (HPLC) and affinity capillary electrophoresis studies.

Application

Potassium phosphate dibasic has been used in the preparation of MMG (maltose, methyl green) medium, phosphate buffered saline and hypotonic solution.

Features and Benefits

  • 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

Legal Information

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

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Dieser Artikel
6035359678P8281
description

anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥98%

description

anhydrous, suitable for luminescence, Molecular Biology, BioUltra, ≥99.0% (T)

description

suitable for HPLC, LiChropur™, 99.0-101.0% (T)

description

reagent grade, ≥98.0%

form

powder

form

powder or crystals

form

powder or crystals

form

powder

solubility

water: soluble

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

H2O: 5%, clear, colorless

solubility

water: 200 mg/mL, clear to slightly hazy, colorless

assay

≥98%

assay

≥99.0% (T)

assay

99.0-101.0% (T)

assay

≥98.0%

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

200

grade

ACS reagent, anhydrous

grade

Molecular Biology

grade

-

grade

reagent grade

anion traces

sulfate (SO42-): ≤0.005%, chloride (Cl-): ≤0.003%

anion traces

sulfate (SO42-): ≤100 mg/kg, chloride (Cl-): ≤50 mg/kg

anion traces

-

anion traces

-


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Lagerklasse

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable



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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

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