71640

Sodium phosphate dibasic

puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T)

• Synonim(y): sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
• Wzór liniowy: Na₂HPO₄
• Numer CAS: 7558-79-4
• Masa cząsteczkowa: 141.96
• Numer WE: 231-448-7
• Numer MDL: MFCD00003496
• Kod UNSPSC: 12352300
• eCl@ss: 38070211
• Identyfikator substancji w PubChem: 329763389
• NACRES: NA.21

Właściwości

• klasa czystości: ACS reagent; puriss. p.a.
• Próba: ≥99.0% (T)
• Postać: powder (or crystals)
• zanieczyszczenia: ≤0.001% total nitrogen (N)
• strata: ≤0.2% loss on drying, 105 °C
• pH: 8.7-9.3 (25 °C, 50 mg/mL in H₂O)
• pKa (25°C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• ślady anionów: chloride (Cl^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• ślady kationów: Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg; heavy metals: ≤0.001% (by ICP-OES)
• ciąg SMILES: [Na+].[Na+].[H]OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
• Klucz InChI: BNIILDVGGAEEIG-UHFFFAOYSA-L

Opis

Opis ogólny

Sodium phosphate dibasic is a sodium salt of phosphoric acid. It is highly hygroscopic and water-soluble compound used as a texturizer, emulsifier, and buffer. It can also be used as a reagent in water softeners, cleaners, and boiler treatments process.

Sodium phosphate is widely used buffer in molecular biology, biochemistry, and chromatographic studies. It exists in three forms: monobasic (NaH₂PO₄), dibasic (Na₂HPO₄), and tribasic (Na₃PO₄). Monobasic and dibasic forms in varying ratios are commonly used to compose the neutral sodium phosphate buffer solution.

Zastosowanie

Sodium phosphate dibasic can be used:

• As an efficient and low-cost catalyst for the synthesis of 2-aminochrome by the reaction between aromatic aldehyde, malononitrile, and α- or β-naphthol under solvent-free conditions.
• As a buffer in the synthesis of cyclic, acyclic enones and α, β-unsaturated aldehydes from trimethylsilyl enol ethers by using palladium as a catalyst and oxone as oxidant.
• As an efficient catalyst in the synthesis of 3,4-dihydropyrano[3,2-c] chromenes from aldehydes, malononitrile and 4-hydroxycoumarin.
• As a phosphorous precursor with the phosphoric acid in the synthesis of hydroxyapatite by precipitation method using anionic surfactant SDS (sodium dodefcyl sulfate).

This page may contain text that has been machine translated.

Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 13 - Non Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 1
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable