Sodium phosphate dibasic

SIAL/71642 - purum p.a., anhydrous, ≥98.0% (T)

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


45-71642-1KG	1 kg	$168.00 1/EA	Add To Favorites
45-71642-5KG	5 kg	$683.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

anion traces	chloride (Cl^-): ≤50 mg/kg
	sulfate (SO₄^2-): ≤1000 mg/kg
assay	≥98.0% (T)
cation traces	Ca: ≤50 mg/kg
	Cd: ≤50 mg/kg
	Co: ≤50 mg/kg
	Cu: ≤50 mg/kg
	Fe: ≤50 mg/kg
	K: ≤200 mg/kg
	Ni: ≤50 mg/kg
	Pb: ≤50 mg/kg
	Zn: ≤50 mg/kg
form	powder
grade	purum p.a.
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	≤2% loss on drying, 110 °C
pH	8.8-9.4 (25 °C, 50 mg/mL in H₂O)
pKa (25 °C)	(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
Quality Level	300
SMILES string	[Na+].[Na+].[H]OP([O-])([O-])=O
solubility	water: soluble 50 mg/mL at 25 °C

Application:

Effects of a commercial whitening toothpaste containing hydrogen peroxide and citric acid on dentin abrasion and erosion.: This study evaluates the effects of sodium phosphate dibasic in a commercial whitening toothpaste formulation. The research highlights its role in mitigating dentin abrasion and erosion, emphasizing its importance in dental care applications (Kim JH et al., 2023 ).

Electrospraying of Bio-Based Chitosan Microcapsules Using Novel Mixed Cross-Linker: Experimental and Response Surface Methodology Optimization.: Sodium phosphate dibasic is utilized in the cross-linking process of chitosan microcapsules via electrospraying. This study demonstrates its significance in optimizing the physical properties and stability of bio-based microcapsules for potential applications in drug delivery systems (Uko L et al., 2022 ).

Compound treatment of thiolated citrus high-methoxyl pectin and sodium phosphate dibasic anhydrous improved gluten network structure.: This research investigates the combined effect of sodium phosphate dibasic and thiolated citrus high-methoxyl pectin on improving the gluten network structure in food systems, highlighting its role in enhancing food texture and quality (Chen J et al., 2023 ).

Bioremediation of trichloroethylene-polluted groundwater using emulsified castor oil for slow carbon release and acidification control.: Sodium phosphate dibasic is used to control acidification in the bioremediation of trichloroethylene-polluted groundwater, demonstrating its application in environmental engineering and pollution control (Chen WT et al., 2022 ).

Use of cellulose nanofibril (CNF)/silver nanoparticles (AgNPs) composite in salt hydrate phase change material for efficient thermal energy storage.: The study utilizes sodium phosphate dibasic in the development of a composite material for thermal energy storage, showcasing its importance in enhancing the thermal properties and efficiency of phase change materials (Shen Z et al., 2021 ).

RIDADR	UN 3077 9 / PGIII
WGK Germany	WGK 1
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥98.0% (T)
UNSPSC	12161700

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