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795410

Sodium phosphate dibasic

Name: Sodium phosphate dibasic
Brand: SIGALD

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

Synonym(s):

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

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About This Item

Linear Formula:

Na₂HPO₄

CAS Number:

7558-79-4

Molecular Weight:

141.96

NACRES:

NA.21

PubChem Substance ID:

329768481

UNSPSC Code:

12161705

EC Number:

231-448-7

MDL number:

MFCD00003496

eCl@ss:

38070211

Assay:

≥99%

Grade:

ACS reagent, anhydrous

Form:

powder

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Properties

Quality Segment

100

grade

ACS reagent, anhydrous

agency

suitable for EPA 533, suitable for SM 5210

product line

Redi-Dri^™

assay

≥99%

form

powder

quality

free-flowing

impurities

≤0.002% Chloride (Cl), ≤0.01% Insoluble matter

loss

≤0.2% loss on drying, 105°C

pH

8.7-9.3 (25 °C, 5% in solution)

pKa (25 °C)

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

anion traces

sulfate (SO₄^2-): ≤0.005%

cation traces

Fe: ≤0.002%, heavy metals: ≤0.001% (by ICP-OES)

application(s)

PFAS testing

SMILES string

[Na+].[Na+].[H]OP([O-])([O-])=O

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

Description

General description

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!

Sodium phosphate dibasic is an inorganic salt with the chemical formula Na₂HPO₄. Sodium phosphate dibasic is highly soluble in water but insoluble in ethanol. It is used as a sequestering agent, buffering agent, pH regulator and saline laxative.

Application

Sodium phosphate dibasic can be used as a buffer in the reverse phase HPLC method.

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.

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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Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c