72069

Sodium tungstate dihydrate

BioUltra, ≥99.0% (T)

• Synonim(y): Tungstic acid sodium salt dihydrate
• Wzór liniowy: Na₂WO₄ · 2H₂O
• Numer CAS: 10213-10-2
• Masa cząsteczkowa: 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

Właściwości

• 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

Opis

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.

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS07
• Słowo ostrzegawcze: Warning
• Kody zagrożeń: H302
• Ostrzeżenia: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Klasa składowania: 13 - Non Combustible Solids
• WGK: WGK 2
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable
• PPE (środki ochrony indywidualnej): dust mask type N95 (US), Eyeshields, Gloves