223328
Tungstic acid
99%
Synonym(s):
dihydroxy(dioxo)tungsten
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About This Item
Linear Formula:
H2WO4
CAS Number:
Molecular Weight:
249.85
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352300
EC Number:
231-975-2
MDL number:
Assay:
99%
Form:
powder
InChI key
CMPGARWFYBADJI-UHFFFAOYSA-L
InChI
1S/2H2O.2O.W/h2*1H2;;;/q;;;;+2/p-2
SMILES string
O[W](O)(=O)=O
assay
99%
form
powder
density
5.5 g/mL at 25 °C (lit.)
Quality Level
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General description
Tungstic acid may be prepared by either digesting tungstate of lime or by treating tungsten with hydrochloric acid. 1
Application
Starting material for the synthesis of a novel dimeric heteropolyoxopeoxotungstate which has potential in further studies of grafted polyoxoperoxo species on silica.
Packaging
5 g packaged in glass bottles; 100 g, 500 g packaged in poly bottles
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
13 - Non Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Piquemal, J-Y. et al.
Chemical Communications (Cambridge, England), 473-473 (1997)
Renagul Abdurahman et al.
Analytica chimica acta, 658(1), 63-67 (2010-01-20)
In this study, a sensitive optical waveguide (OWG) sensor for the detection and identification of volatile organic compounds (VOCs) was reported. The sensing membrane is constructed by immobilization of peroxopolytungsten acid (PTA) thin film over a single-mode potassium ion (K(+))
R C Wahl et al.
Archives of biochemistry and biophysics, 230(1), 264-273 (1984-04-01)
Reconstitution of the apoprotein of the molybdoenzyme nitrate reductase in extracts of the Neurospora crassa mutant nit-1 with molybdenum cofactor released by denaturation of purified molybdoenzymes is efficient in the absence of exogenous MoO2-4 under defined conditions. Evidence is presented
P Blanchardie et al.
Journal of steroid biochemistry, 18(6), 789-799 (1983-06-01)
Characterization of the glucocorticoid receptor from rabbit liver cytosol was studied in vitro. Binding of [3H]-dexamethasone showed a high affinity (KD = 2.4 . 10(-9)M) and a concentration of binding sites of 0.3 . 10(-12) mol/mg proteins. Association and dissociation
Xiankun Lin et al.
Langmuir : the ACS journal of surfaces and colloids, 25(11), 6081-6087 (2009-03-12)
Hexagonally mesostructured polyoxometalate-based hybrid was prepared by a mild-solution method through the self-assembly of an amphiphilic poly(ethylene oxide) octadecyldimethylammonium (C18NEO12) and a polyanionic silicotungstic acid (HSiW). The composition of the hybrid was characterized through 1H NMR, infrared spectroscopy, mass spectroscopy
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