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RDD022

Sodium phosphate dibasic

anhydrous, free-flowing, Redi-Dri, ReagentPlus®, ≥99.0%

Synonym(s):

sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate

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About This Item

Linear Formula:
Na2HPO4
CAS Number:
Molecular Weight:
141.96
NACRES:
NA.25
PubChem Substance ID:
UNSPSC Code:
12161700
EC Number:
231-448-7
MDL number:
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grade

anhydrous

Quality Segment

product line

ReagentPlus®, Redi-Dri

assay

≥99.0%

form

powder

quality

free-flowing

loss

≤1.0% loss on drying

pH

8.9-9.2 (25 °C, 50 g/L in water)

pKa (25 °C)

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

solubility

water: 100 mg/mL, clear, colorless

InChI

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

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

General description

Sodium phosphate dibasic is a commonly used buffer in frozen formulations.[1]

Application


  • Solid-State NMR Spectroscopy to Probe State and Phase Transitions in Frozen Solutions: This study utilized Sodium phosphate dibasic in the development of formulations for solid-state NMR spectroscopy, focusing on its utility in stabilizing and buffering various chemical environments within in vitro diagnostics manufacturing. This application ensures precise diagnostics by maintaining the integrity of the solution during freezing and thawing cycles (Du et al., 2023).

  • Arabinoxylan in Water through SANS: Single-Chain Conformation, Chain Overlap, and Clustering: This paper discusses the application of Sodium phosphate dibasic in the creation of specific buffer solutions for the structural analysis of polysaccharides using small-angle neutron scattering (SANS), a technique often employed in the pharmaceutical and biotechnological industries to ensure high-quality standards in diagnostics production (Petermann et al., 2023).

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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This Item
795410S9763RDD038
grade

anhydrous

grade

ACS reagent, anhydrous

grade

ACS reagent

grade

-

assay

≥99.0%

assay

≥99%

assay

≥99.0%

assay

≥99.0%

product line

ReagentPlus®, Redi-Dri

product line

Redi-Dri

product line

-

product line

BioReagent, Redi-Dri

Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

100

form

powder

form

powder

form

powder

form

powder or crystals

solubility

water: 100 mg/mL, clear, colorless

solubility

-

solubility

water: 5% at 25 °C, clear

solubility

water: soluble 100 mg/mL


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Storage Class

13 - Non Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable



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