72069

Natriumwolframat Dihydrat

BioUltra, ≥99.0% (T)

• Synonym(e): Wolframsäure Natriumsalz Dihydrat
• Lineare Formel: Na₂WO₄ · 2H₂O
• CAS-Nummer: 10213-10-2
• Molekulargewicht: 329.85
• NACRES: NA.25
• PubChem Substance ID: 57652396
• UNSPSC Code: 12352302
• EC Number: 236-743-4
• MDL number: MFCD00149190
• Assay: ≥99.0% (T)
• Grade: reagent grade
• Form: crystals
• Solubility: H₂O: 1 M at 20 °C, clear, colorless

Eigenschaften

• grade: reagent grade
• Quality Segment: 100
• product line: BioUltra
• assay: ≥99.0% (T)
• form: crystals
• impurities: insoluble matter, passes filter test, ≤0.001% total nitrogen (N), ≤0.1% free alkali (as NaOH)
• pH: 9.5-11.5 (25 °C, 1 M in H₂O)
• mp: 698 °C (lit.)
• solubility: H₂O: 1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤100 mg/kg
• cation traces: As: ≤0.5 mg/kg, 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: ≤10 mg/kg, Zn: ≤5 mg/kg
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: ≤0.120, λ: 280 nm A_max: ≤0.035
• SMILES string: O.O.[Na+].[Na+].[O-][W]([O-])(=O)=O
• InChI: 1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;
• InChI key: WPZFLQRLSGVIAA-UHFFFAOYSA-N

Beschreibung

General description

Sodium tungstate dihydrate is a sodium salt of tungstic acid, which occurs as white colorless crystals.

Application

Sodium tungstate dihydrate has been used in bioluminescence assays and to synthesize polycrystalline samples.

Other Notes

Stain in electron microscopy (nucleic acids, certain glycoproteins); Protein precipitant

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• Gefahrencodes: H302
• Sicherheitshinweise: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Lagerklasse: 13 - Non Combustible Solids
• WGK: WGK 2
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• PSA (Persönliche Schutzausrüstung): dust mask type N95 (US), Eyeshields, Gloves