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10213-10-2 molecular structure
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disodium dioxotungstenbis(olate) dihydrate

ChemBase ID: 102992
Molecular Formular: H4Na2O6W
Molecular Mass: 329.8477
Monoisotopic Mass: 329.93125741
SMILES and InChIs

SMILES:
O.O.[Na+].[Na+].[O-][W](=O)(=O)[O-]
Canonical SMILES:
[O-][W](=O)(=O)[O-].O.O.[Na+].[Na+]
InChI:
InChI=1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;
InChIKey:
WPZFLQRLSGVIAA-UHFFFAOYSA-N

Cite this record

CBID:102992 http://www.chembase.cn/molecule-102992.html

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NAMES AND DATABASE IDS

NAMES AND DATABASE IDS

Names Database IDs
IUPAC name
disodium dioxotungstenbis(olate) dihydrate
IUPAC Traditional name
dipotassium dihydrate tungstate
disodium dihydrate tungstate
Synonyms
Tungstic acid sodium salt dihydrate
SODIUM TUNGSTATE DIHYDRATE
Sodium tungsten oxide dihydrate, ACS
Sodium tungstate(VI)
Sodium tungsten oxide dihydrate
Tungstic acid sodium salt
SODIUM TUNGSTATE, ACS
Sodium tungstate dihydrate
钨酸钠二水合物, ACS
钨酸钠二水合物
钨酸 钠盐 二水合物
钨酸钠 二水合物
CAS Number
10213-10-2
EC Number
231-143-9
236-743-4
MDL Number
MFCD00149190
Merck Index
148698
PubChem SID
24853376
24886359
24900048
162090251
24886358
24863685
24848569
PubChem CID
150191

CALCULATED PROPERTIES

CALCULATED PROPERTIES

JChem
Acid pKa -2.30103  H Acceptors
H Donor LogD (pH = 5.5) -5.970884 
LogD (pH = 7.4) -6.2965326  Log P -1.7752 
Molar Refractivity 5.7716 cm3 Polarizability 10.616612 Å3
Polar Surface Area 80.26 Å2 Rotatable Bonds
Lipinski's Rule of Five true 

PROPERTIES

PROPERTIES

Physical Property Safety Information Product Information Bioassay(PubChem)
Solubility
H2O: soluble1 M at 20 °C, clear, colorless expand Show data source
Soluble in water. Insoluble in alcohol expand Show data source
Apperance
chunks expand Show data source
Crystalline expand Show data source
Powder expand Show data source
Melting Point
100°C -2H{2}O expand Show data source
698 °C(lit.) expand Show data source
Density
3.250 expand Show data source
Absorption Wavelength
λ: 260 nm Amax: ≤0.120 expand Show data source
λ: 280 nm Amax: ≤0.035 expand Show data source
pH
9.5-11.5 (25 °C, 1 M in H2O) expand Show data source
Storage Condition
Room Temperature (15-30°C) expand Show data source
RTECS
YO7900000 expand Show data source
European Hazard Symbols
X expand Show data source
Irritant Irritant (Xi) expand Show data source
Harmful Harmful (Xn) expand Show data source
MSDS Link
Download expand Show data source
Download expand Show data source
Download expand Show data source
Download expand Show data source
Download expand Show data source
Download expand Show data source
Download expand Show data source
German water hazard class
1 expand Show data source
Risk Statements
22 expand Show data source
22-36 expand Show data source
R:36/37/38 expand Show data source
Safety Statements
26-36-60 expand Show data source
36 expand Show data source
S:20-25-26-37/39 expand Show data source
TSCA Listed
expand Show data source
GHS Pictograms
GHS06 expand Show data source
GHS07 expand Show data source
GHS Signal Word
Warning expand Show data source
GHS Hazard statements
H301-H319 expand Show data source
H302 expand Show data source
GHS Precautionary statements
P280-P301+P310-P305+P351+P338-P321-P405-P501A expand Show data source
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves expand Show data source
Purity
≥99% expand Show data source
≥99.0% (AT) expand Show data source
≥99.0% (T) expand Show data source
95% expand Show data source
99% expand Show data source
99.0-100.5 expand Show data source
99.0-101.0% expand Show data source
99.0-101.0% (ACS specification) expand Show data source
99.995% trace metals basis expand Show data source
99-101% expand Show data source
Grade
ACS expand Show data source
ACS reagent expand Show data source
JIS special grade expand Show data source
puriss. p.a. expand Show data source
purum expand Show data source
REAGENT expand Show data source
Certificate of Analysis
Download expand Show data source
Download expand Show data source
Suitability
suitable for preparation of protein-free filtrates according to Folin expand Show data source
Impurities
≤0.001% total nitrogen (N) expand Show data source
≤0.01% insolubles expand Show data source
≤0.02 meq/g Titr. free base expand Show data source
≤0.05% free alkali (as NaOH) expand Show data source
≤0.1% free alkali (as NaOH) expand Show data source
insoluble matter, passes filter test expand Show data source
Cation Traces
As: ≤0.5 mg/kg expand Show data source
As: ≤1 mg/kg expand Show data source
Ca: ≤10 mg/kg expand Show data source
Cd: ≤5 mg/kg expand Show data source
Co: ≤10 mg/kg expand Show data source
Co: ≤5 mg/kg expand Show data source
Cr: ≤5 mg/kg expand Show data source
Cu: ≤5 mg/kg expand Show data source
Fe: ≤20 mg/kg expand Show data source
Fe: ≤5 mg/kg expand Show data source
heavy metals and iron (as Pb): ≤0.001% expand Show data source
K: ≤50 mg/kg expand Show data source
Mg: ≤5 mg/kg expand Show data source
Mn: ≤5 mg/kg expand Show data source
Mo: ≤0.001% expand Show data source
Mo: ≤10 mg/kg expand Show data source
Mo: ≤100 mg/kg expand Show data source
Ni: ≤10 mg/kg expand Show data source
Ni: ≤5 mg/kg expand Show data source
Pb: ≤10 mg/kg expand Show data source
Zn: ≤5 mg/kg expand Show data source
Antion Traces
chloride (Cl-): ≤0.005% expand Show data source
chloride (Cl-): ≤100 mg/kg expand Show data source
chloride (Cl-): ≤50 mg/kg expand Show data source
sulfate (SO42-): ≤0.01% expand Show data source
sulfate (SO42-): ≤100 mg/kg expand Show data source
sulfate (SO42-): ≤200 mg/kg expand Show data source
Quality Level
PREMIUM expand Show data source
λ
1 M in H2O expand Show data source
Product Line
BioUltra expand Show data source
Linear Formula
Na2WO4 · 2H2O expand Show data source

DETAILS

DETAILS

MP Biomedicals MP Biomedicals Sigma Aldrich Sigma Aldrich
MP Biomedicals - 02150161 external link
Dihydrate
Used in Folin-Wu procedures for preparation of protein-free filtrates.
MP Biomedicals - 02152581 external link
Dihydrate
ACS Reagent Grade
Purity: 99-101%
Sigma Aldrich - 72069 external link
Other Notes
Stain in electron microscopy (nucleic acids, certain glycoproteins)1; Protein precipitant2.
Sigma Aldrich - 379751 external link
Packaging
5, 25 g in poly bottle
Sigma Aldrich - 223336 external link
Packaging
100, 500 g in poly bottle
5 g in glass bottle
Application
Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones.1
Sigma Aldrich - T2629 external link
包装
50, 100, 500 g in poly bottle

REFERENCES

REFERENCES

From Suppliers Google Scholar IconGoogle Scholar PubMed iconPubMed Google Books IconGoogle Books
  • • Folin and Wu, J. Biol. Chem. , 38 : 81, (1919).
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PATENTS

PATENTS

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INTERNET

INTERNET

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