1.06580

di-Sodium hydrogen phosphate dihydrate

for analysis EMSURE^®

• Synonym(s): di-Sodium hydrogen phosphate dihydrate, Sodium monohydrogen phosphate, Sodium phosphate dibasic, sec-Sodium phosphate, Disodium hydrogen phosphate dihydrate, Disodium phosphate, Sodium phosphate dibasic dihydrate
• Linear Formula: Na₂HPO₄ · 2H₂O
• CAS Number: 10028-24-7
• Molecular Weight: 177.99
• MDL number: MFCD00149182
• UNSPSC Code: 12352302
• EC Index Number: 231-448-7
• NACRES: NA.21

Properties

• grade: Laboratory Reagent
• Quality Level: 300
• product line: EMSURE^®
• Assay: ≥99.5% (acidimetric)
• form: solid
• potency: >2000 mg/kg LD₅₀, oral (Rat)
• pH: 9.0-9.2 (20 °C, 50 g/L in H₂O)
• mp: 92.5 °C (Elimination of water of crystallisation)
• solubility: 93 g/L
• density: 2.1 g/cm³ at 20 °C
• bulk density: 850‑1000 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Cu: ≤0.0003%; Fe: ≤0.001%; K: ≤0.005%; N: ≤0.001%; Pb: ≤0.001%; heavy metals (as Pb): ≤0.001%
• storage temp.: 2-30°C
• SMILES string: O.O.[Na+].[Na+].OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2
• InChI key: KDQPSPMLNJTZAL-UHFFFAOYSA-L

Description

Linkage

Replaces: 1.06580.9057; SX0713; SX0713-5

Analysis Note

Assay (acidimetric): ≥ 99.5 %
Identity: passes test
pH-value (5 %; water): 9.0 - 9.2
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.005 %
Pb (Lead): ≤ 0.001 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable