disodium dihydrate hydrogen phosphate

• ChemBase ID: 155925
• Molecular Formular: H5Na2O6P
• Molecular Mass: 177.989401
• Monoisotopic Mass: 177.96191307
• SMILES: O.O.OP(=O)([O-])[O-].[Na+].[Na+]
• Canonical SMILES: [O-]P(=O)(O)[O-].O.O.[Na+].[Na+]
• InChI: InChI=1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2
• InChIKey: KDQPSPMLNJTZAL-UHFFFAOYSA-L

NAMES AND DATABASE IDS

Names

• IUPAC name: disodium dihydrate hydrogen phosphate
• IUPAC Traditional name: disodium dihydrate hydrogen phosphate
• Synonyms: Disodium phosphate; sec-Sodium phosphate; Disodium hydrogen phosphate dihydrate; di-Sodium hydrogen phosphate dihydrate; Sodium phosphate dibasic dihydrate; Dinatrii phosphas dihydricus; Disodium hydrogen phosphate 二水合物; 磷酸二钠; 磷酸氢二钠 二水合物; 磷酸钠 二元 二水合物; 磷酸氢二钠

Database IDs

• CAS Number: 10028-24-7
• EC Number: 231-448-7
• MDL Number: MFCD00149182
• PubChem SID: 24858365; 24886241; 162250063; 24886238; 24845712
• PubChem CID: 6451167

CALCULATED PROPERTIES

• Acid pKa: 1.7961261
• H Acceptors: 4
• H Donor: 1
• LogD (pH = 5.5): -3.3916447
• LogD (pH = 7.4): -3.9718332
• Log P: -1.0201038
• Molar Refractivity: 12.4085 cm^3
• Polarizability: 5.685633 Å^3
• Polar Surface Area: 83.42 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: H2O: soluble0.1 g/mL at 25 °C, clear, colorless; H2O: soluble0.5 M at 20 °C, clear, colorless
• Absorption Wavelength: λ: 230 nm Amax: 0.1; λ: 260 nm Amax: 0.015; λ: 260 nm Amax: 0.03; λ: 260 nm Amax: 0.06; λ: 280 nm Amax: 0.010; λ: 280 nm Amax: 0.03; λ: 280 nm Amax: 0.04; λ: 320 nm Amax: 0.02; λ: 500 nm Amax: 0.02
• pH: 8.8-9.4 (20 °C, 10% in H2O); 8.8-9.4 (50 mg/mL in H2O); 8.9-9.2 (25 °C, 0.5 M in H2O); 9.0-9.2 (20 °C, 2%); 9.0-9.2 (20 °C, 5%)

Safety Information

• German water hazard class: 1
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Product Information

• Purity: ≥98.0% (T); ≥98.5%; ≥98.5% (T); ≥99.0% (T); ≥99.5%; 98.5-101% (calc. to the dried substance); 98.5-101.0% (calc. to the dried substance)
• Grade: for HPLC; for luminescence; for molecular biology; Ph Eur; puriss. p.a.; purum p.a.; Reag. Ph. Eur.
• Suitability: complies for appearance of solution; corresponds for filter test; corresponds to standard for RP gradient test; in accordance for appearance of solution; in accordance for luminescence
• Impurities: ≤0.0005% heavy metals (as Pb); ≤0.001% ammonium (NH4); ≤0.001% heavy metals (as Pb); ≤0.001% total nitrogen (N); ≤0.5% NaH2PO4(calc. to dried subst.); ≤1% NaH2PO4(calc. to dried subst.); DNases, none detected; insoluble matter, passes filter test; phosphatases, none detected; proteases, none detected; reducing impurities, complies; reducing matter, complies; residual solvents, complies; RNases, none detected
• Cation Traces: Al: ≤5 mg/kg; As: ≤0.1 mg/kg; As: ≤0.5 mg/kg; As: ≤1 mg/kg; As: ≤2 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Ca: ≤50 mg/kg; Cd: ≤5 mg/kg; Cd: ≤50 mg/kg; Co: ≤5 mg/kg; Co: ≤50 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Cu: ≤50 mg/kg; Fe: ≤10 mg/kg; Fe: ≤5 mg/kg; Fe: ≤50 mg/kg; K: ≤100 mg/kg; K: ≤50 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Ni: ≤5 mg/kg; Ni: ≤50 mg/kg; Pb: ≤5 mg/kg; Pb: ≤50 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg; Zn: ≤50 mg/kg
• Antion Traces: chloride (Cl-): ≤10 mg/kg; chloride (Cl-): ≤50 mg/kg; sulfate (SO42-): ≤100 mg/kg; sulfate (SO42-): ≤50 mg/kg
• Loss on Drying: 19.5-21% loss on drying, 130 °C; 19.5-21.0% loss on drying, 130 °C; 20-21% loss on drying
• Quality Level: PREMIUM
• Quality: meets analytical specification of Ph. Eur., BP
• λ: 0.5 M in H2O; 10 % in H2O
• Pharmacopeia: testing & handling conforms to Pharmacopeia
• Product Line: BioUltra
• Linear Formula: Na2HPO4 · 2H2O

DETAILS

Sigma Aldrich - 71643

Other Notes
Gel electrophoresis - running buffer component for denaturing gels containing formamide1