223336

Sodium tungstate dihydrate

ACS reagent, ≥99%

• 동의어(들): Tungstic acid sodium salt dihydrate
• Linear Formula: Na₂WO₄ · 2H₂O
• CAS Number: 10213-10-2
• Molecular Weight: 329.85
• EC Number: 236-743-4
• MDL number: MFCD00149190
• UNSPSC 코드: 12352302
• PubChem Substance ID: 329752303
• NACRES: NA.21
• 분석: ≥99%
• Grade: ACS reagent
• 양식: crystalline powder

속성

• Grade: ACS reagent
• Quality Level: 200
• 분석: ≥99%
• 양식: crystalline powder
• 반응 적합성: reagent type: catalyst; core: tungsten
• 불순물: ≤0.01% insolubles; ≤0.02 meq/g Titr. free base
• pH: 9-11.5 (20 °C, 100 g/L)
• mp: 698 °C (lit.)
• 음이온 미량물: chloride (Cl^-): ≤0.005%; sulfate (SO₄^2-): ≤0.01%
• 양이온 미량물: Mo: ≤0.001%; heavy metals and iron (as Pb): ≤0.001%
• 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

설명

일반 설명

Sodium tungstate dihydrate is a hydrated sodium salt of tungstic acid. It participates as a catalyst in the preparation of various epoxides. Various crystallographic properties of sodium tungstate dihydrate have been analyzed.

애플리케이션

Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones.

Sodium tungstate dihydrate (Na₂WO₄.2H₂O) may be employed in the following studies:

• As a derivatization reagent for the determination of hydrogen peroxide by a fluorimetric method.
• Synthesis of N-hydroxy-desferrioxamine B, a metabolite of the microbial product desferrioxamine B.
• Preparation of highly crystalline CaMoO₄, SrMoO₄, CaWO₄ and SrWO₄ nanoparticles.

Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate.

안전성 정보

• 픽토그램: GHS07
• 신호어: Warning
• 유해 및 위험 성명서: H302
• 예방조치 성명서: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 2
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable