1.06575

di-Sodium hydrogen phosphate heptahydrate

for analysis EMSURE^® ACS

• Synonym(s): Sodium phosphate dibasic heptahydrate, Disodium hydrogen phosphate heptahydrate, Disodium phosphate
• Linear Formula: Na₂HPO₄ · 7H₂O
• CAS Number: 7782-85-6
• Molecular Weight: 268.07
• MDL number: MFCD00149180
• UNSPSC Code: 12352302
• EC Index Number: 231-448-7
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 300
• vapor density: 4.9 (vs air)
• product line: EMSURE^®
• assay: 98.0-102.0% (acidimetric)
• form: solid
• potency: 12930 mg/kg LD₅₀, oral (Rat)
• impurities: ≤0.005% Insoluble matter
• pH: 8.7-9.3 (25 °C, 50 g/L in H₂O)
• mp: 48 °C (Elimination of water of crystallisation)
• solubility: 154 g/L
• density: 1.68 g/mL at 25 °C (lit.)
• bulk density: 800 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Fe: ≤0.001%; heavy metals: ≤0.001%
• storage temp.: 2-30°C
• SMILES string: O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2
• InChI key: PYLIXCKOHOHGKQ-UHFFFAOYSA-L

Description

Linkage

Replaces: SX0715; SX0715-3; SX0715-20

Analysis Note

Assay (acidimetric): 98.0 - 102.0 %
Identity: passes test
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water, 25 °C): 8.7 - 9.3
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (ACS): ≤ 0.001 %
Fe (Iron): ≤ 0.001 %
Corresponds to ACS

Legal Information

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

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable