1.06672
Sodium tungstate dihydrate
EMPLURA®
别名:
Sodium tungstate dihydrate
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关于此项目
经验公式（希尔记法）:
Na2O4W · 2H2O
化学文摘社编号:
分子量:
329.85
UNSPSC Code:
12352302
EC Index Number:
236-743-4
NACRES:
NA.21
MDL number:
Assay:
≥98% (thermogravimetric)
Form:
crystals
Solubility:
730 g/L
Quality Segment
product line
EMPLURA®
assay
≥98% (thermogravimetric)
form
crystals
potency
1190 mg/kg LD50, oral (Rat)
pH
8-9 (20 °C, 50 g/L in H2O)
mp
100 °C (Elimination of water of crystallisation)
solubility
730 g/L
density
3.23 g/cm3 at 20 °C
bulk density
1600 kg/m3
anion traces
chloride (Cl-): ≤0.01%, sulfate (SO42-): ≤0.02%
cation traces
Fe: ≤0.002%, N: ≤0.005%, excess alkali (as NaOH): ≤0.1%
storage temp.
15-25°C
SMILES string
[W](=O)(=O)([O-])[O-].[Na+].[Na+].O.O
InChI
1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;
InChI key
WPZFLQRLSGVIAA-UHFFFAOYSA-N
Application
- Synthesis and characterization of Anderson-Evans type polyoxometalates, antibacterial properties.: This research focuses on the synthesis and characterization of Anderson-Evans type polyoxometalates, evaluating their antibacterial properties. Sodium tungstate dihydrate is used in the synthesis process to form these polyoxometalates. (Avci Özbek, 2023).
- Nitric oxide modulates folate-mediated one-carbon metabolism and mitochondrial energy levels of peaches during cold storage.: This study explores the role of nitric oxide in modulating folate-mediated one-carbon metabolism and mitochondrial energy levels in peaches during cold storage. Sodium tungstate dihydrate is used as an analytical reagent in the experiments. (Yang et al., 2023).
- Facile Bottom-up Preparation of WS(2)-Based Water-Soluble Quantum Dots as Luminescent Probes for Hydrogen Peroxide and Glucose.: Details a novel method for preparing WS(2)-based water-soluble quantum dots used as luminescent probes for detecting hydrogen peroxide and glucose. Sodium tungstate dihydrate is used in the preparation of these quantum dots. (Hang et al., 2019).
Analysis Note
Assay (thermogravimetric): ≥ 98 %
Identity (x-ray diffraction): passes test
Free alkali (as NaOH): ≤ 0.1 %
Chloride (Cl): ≤ 0.01 %
Sulfate (SO₄): ≤ 0.02 %
Total nitrogen (N): ≤ 0.005 %
Fe (Iron): ≤ 0.002 %
Identity (x-ray diffraction): passes test
Free alkali (as NaOH): ≤ 0.1 %
Chloride (Cl): ≤ 0.01 %
Sulfate (SO₄): ≤ 0.02 %
Total nitrogen (N): ≤ 0.005 %
Fe (Iron): ≤ 0.002 %
Legal Information
EMPLURA is a registered trademark of Merck KGaA, Darmstadt, Germany
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signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
存储类别
13 - Non Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable