431478

Sodium phosphate dibasic heptahydrate

≥99.99% trace metals basis

• Synonym(s): Disodium hydrogen phosphate heptahydrate, Disodium phosphate
• Linear Formula: Na₂HPO₄ · 7H₂O
• CAS Number: 7782-85-6
• Molecular Weight: 268.07
• EC Number: 237-707-0
• MDL number: MFCD00149180
• UNSPSC Code: 12352302
• PubChem Substance ID: 24867019
• NACRES: NA.22

Properties

• vapor density: 4.9 (vs air)
• assay: ≥99.99% trace metals basis
• form: solid
• impurities: ≤0.005% insolubles; <100 ppm total metallic impurities
• pH: 8.7-9.3
• density: 1.68 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Fe: ≤0.001%; heavy metals: ≤0.001%
• 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

Application

Sodium phosphate dibasic heptahydrate has been used to prepare sodium phosphate buffer and phosphate-buffered saline (PBS) buffer.[44}

Features and Benefits

Meets A.C.S. reagent specifications.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)