Sodium phosphate dibasic

SIGALD/795410 - anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥99%

Synonym: sec-Sodium phosphate; Disodium hydrogen phosphate; Disodium phosphate; Sodium hydrogenphosphate

CAS Number: 7558-79-4
Empirical Formula (Hill Notation): Na₂HPO₄
Molecular Weight: 141.96
EC Number: 231-448-7
MDL Number: MFCD00003496
Linear Formula: Na₂HPO₄
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-795410-100G	100 g	$80.40 1/EA	Add To Favorites
45-795410-500G	500 g	$114.00 1/EA	Add To Favorites
45-795410-1KG	1 kg	$198.00 1/EA	Add To Favorites
45-795410-2.5KG	2.5 kg	$387.00 1/EA	Add To Favorites
45-795410-5KG	5 kg	$601.00 1/EA	Add To Favorites

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This image depicts SKU: 795410-100G

Properties
Descriptions
Safety Info.
Basic Data

agency	suitable for EPA 533
	suitable for SM 5210
anion traces	sulfate (SO₄^2-): ≤0.005%
application(s)	PFAS testing
assay	≥99%
cation traces	Fe: ≤0.002%
	heavy metals: ≤0.001% (by ICP-OES)
form	powder
grade	ACS reagent
	anhydrous
impurities	≤0.002% Chloride (Cl)
	≤0.01% Insoluble matter
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
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)
product line	Redi-Dri^™
quality	free-flowing
Quality Level	100
SMILES string	[Na+].[Na+].[H]OP([O-])([O-])=O

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
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.
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!
General description:	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.
Legal Information:	Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
Packaging:	1, 2.5 kg in poly bottle
Packaging:	100, 500 g in poly bottle
Packaging:	5 kg in poly drum

WGK Germany	WGK 1
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥99%
UNSPSC	12161705

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