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Silicotungstic acid

Manufactured by Merck Group

Silicotungstic acid is a chemical compound with the formula H₄[Si(W₃O₁₀)₄]. It is a white crystalline solid that is soluble in water. Silicotungstic acid is used as a reagent in analytical chemistry and as a component in certain industrial processes.

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2 protocols using silicotungstic acid

1

Microscopic Analysis of Heteropoly Acid Compounds

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All chemicals were purchased from commercial sources and used without further purification. Glycerol (HOCH2CH(OH)CH2OH, 99.92%, Fluka), acetone ((CH3)2CO, ≥99%, Sigma-Aldrich), phosphotungstic acid hydrate (H3[PW12O40nH2O, for microscopy, Fluka), phosphomolybdic acid hydrate (H3[PMo12O40nH2O, for microscopy, Sigma-Aldrich), silicotungstic acid (H4[SiW12O40nH2O ≥99.9%, Aldrich), toluene anhydrous (C6H5CH3, 99.8%, Sigma-Aldrich) and ethanol (CH3CH2OH, ≥99.8%, Fluka).
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2

Sertraline Quantification using Electrochemical Sensors

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All reagents used were chemically pure grade. Doubly distilled water was used throughout all experiments. Sertraline HCl (Mol. wt. = 342.7 g mol−1), and its pharmaceutical preparations (Serlift® tablets, 100 mg/tablet, Global Napi Pharmaceuticals, Egypt) and Moodapex® tablet (50 mg/tablet, Multi-Apex phama-Badr City-Cairo, Egypt), were used throughout this study.
Silicotungstic acid (H4[W12SiO40]), silicomolybdic acid H4[SiMo12O40], phosphomolybdic acid (H3[PMo12O40]), dibutyl phthalate (DBP), dioctyl phthalate (DOP), tricresyl phosphate (TCP), ethylhexyl adipate (EHA), ortho-nitrophenyl phenyl ether (o-NPPE), ethylhexyl sebacate (EHS), ortho-nitophenyloctyl ether (o-NPOE), poly (vinyl chloride) (PVC) of high relative molecular weight and tetrahydrofuran (THF), sodium tetrakis-[3,5-bis(trifluoromethyl)phenyl]borate (NaTFMPB) were obtained from Aldrich chemical company.
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