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inquirySodium tungstate dihydrate Basic information Product Name: Sodium tungstate dihydrate Synonyms: SODIUM O-TUNGSTATE, HYDROUS;SODIUM WOLFRAMATE;SODIUM WOLFRAMATE DIHY
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Product name: Sodium Tungstate CAS No.: 10213-10-2 Molecule Formula:CH4Na2O6W Molecule Weight:329.85 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise Standard TESTING ITEMS
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Conditions | Yield |
---|---|
In acetic acid heating, filtration; evapn., crystn.; | |
In acetic acid heating, filtration; evapn., crystn.; |
Conditions | Yield |
---|---|
In not given heating, filtration; evapn., crystn.; | |
In not given heating, filtration; evapn., crystn.; |
Conditions | Yield |
---|---|
In not given heating, filtration; evapn., crystn.; | |
In not given heating, filtration; evapn., crystn.; | |
In water for 0.333333h; |
Conditions | Yield |
---|---|
In not given heating, filtration; evapn., crystn.; | |
In melt leaching with boiling water, analogous react. with tungstenic ore; crystn.; | |
In not given heating, filtration; evapn., crystn.; | |
In melt leaching with boiling water, analogous react. with tungstenic ore; crystn.; |
sodium tungstate (VI) dihydrate
Conditions | Yield |
---|---|
above 6°C; | |
above 6°C; |
Conditions | Yield |
---|---|
In water equiv. amt. of Pb(NO3)2 and Na2WO4*2H2O dissolved in H2O are simultaneously added to H2O at equal flow rates (180 ml/min) with vigorous stirring(stirring rate 210 rpm); soln. decanted; filtered; ppt. washed (H2O); dried at 150°C; | 99.8% |
In water equiv. amt. of Pb(NO3)2 and Na2WO4*2H2O dissolved in H2O are simultaneously added to H2O at equal flow rates (15 ml/min) with vigorous stirring (stirring rate 300 rpm); soln. decanted; filtered; ppt. washed (H2O); dried at 150°C; | 99.5% |
In water equiv. amt. of Pb(NO3)2 and Na2WO4*2H2O dissolved in H2O are simultaneously added to H2O at equal flow rates (17 ml/min) with vigorous stirring (stirring rate 300 rpm); soln. decanted; filtered; ppt. washed (H2O); dried at 150°C; | 99.7% |
sodium tungstate (VI) dihydrate
(tetrabutylammonium)4H3PW11O39
Conditions | Yield |
---|---|
With hydrogenchloride In water stirring (1 h, room temp.); washing (water and diethyl ether), drying (vac., 60°C); elem. anal.; | 99% |
Methyl 6-methylnicotinate
sodium tungstate (VI) dihydrate
5-(methoxycarbonyl)-2-methylpyridine 1-oxide
Conditions | Yield |
---|---|
With dihydrogen peroxide In methanol; water | 98% |
Conditions | Yield |
---|---|
With dihydrogen peroxide; tetra(n-butyl)ammonium hydrogen sulfate In toluene | 97.8% |
sodium tungstate (VI) dihydrate
benzyltrimethylammonium chloride
Conditions | Yield |
---|---|
With sulfuric acid; dihydrogen peroxide In toluene | 97.6% |
sodium tungstate (VI) dihydrate
tetraphenylarsonium chloride
Conditions | Yield |
---|---|
With hydrogenchloride; dihydrogen peroxide In water treatment of Na2WO4 soln. with 30% H2O2, pH adjustment to 2.5 (diltd. HCl), dropwise addn. of 2 equiv. Ph4AsCl (pptn.); filtration, washing (H2O, Et2O), drying in air; elem. anal.; | 97% |
Conditions | Yield |
---|---|
In water for 48h; | 97% |
2-[[(4-chlorophenyl)thio]methyl]-1,4-difluorobenzene
sodium tungstate (VI) dihydrate
2-[[(4-chlorophenyl)sulfonyl]methyl]-1,4-difluorobenzene
Conditions | Yield |
---|---|
With sulfuric acid; dihydrogen peroxide In n-heptane; water; toluene | 96% |
Conditions | Yield |
---|---|
In water molar ratio W:Te=3:1, acid digestion bomb, 225°C, 4 d; then cooling to room temp. over 36 h; | 96% |
In neat (no solvent, solid phase) stoich. amts., heating in air (450°C, 6 h; then 580°C, 2 d; intermittent grinding); |
sodium tungstate (VI) dihydrate
tetrahexylammonium chloride
Conditions | Yield |
---|---|
With hydrogenchloride; dihydrogen peroxide In water treatment of Na2WO4 soln. with 30% H2O2, pH adjustment to 2.5 (diltd. HCl), dropwise addn. of (C6H13)4NCl (pptn.); filtration, washing (H2O, Et2O), drying in air; elem. anal.; | 96% |
sodium tungstate (VI) dihydrate
phosphoric acid
ethylenediamine
Conditions | Yield |
---|---|
In water High Pressure; mixt. Na2WO4*2H2O, H3PO4, CuCl2*2H2O, ethylenediamine and water (pH 5) in polytetrafluoroethylene lined stainless stell autoclave was heated for80 h at 160°C and cooled to room temp. over 24 h; ppt. was filtered; elem. anal.; | 95% |
Conditions | Yield |
---|---|
With sodium acetate buffer In water SeO2 and Na2WO4*2H2O added to soln. of CuCl2*2H2O (molar ratio 1:9:1.6) in sodium acetate buffer (pH 4.8); heated to 90°C for 1 h; cooled; solid CsCl added; ppt. isolated; air dried; elem. anal.; | 95% |
sodium tungstate (VI) dihydrate
water
Conditions | Yield |
---|---|
With HCl In water dissolved at 80°C with stirring, adjusted (HCl) pH to 6.3, kept at 80°C for 10 min, filtered, added KCl, stirred for 15 min; ppt. filtered, dried (80°C); | 95% |
sodium tungstate (VI) dihydrate
tetraphenylphosphonium bromide
Conditions | Yield |
---|---|
With HNO3 In methanol; water byproducts: H2O; (C5(CH3)5)Mo2O5 in methanol was mixed with an aq. soln. of Na2WO4*2H2O, aq. HNO3 was added, stirring for 2 h, bromide salt in water was added; ppt. was filtered off, washed with small portions of water, methanol anddiethyl ether, dried under vac. at 70°C; elem. anal.; | 95% |
ziconium(IV) oxychloride octahydrate
sodium tungstate (VI) dihydrate
Conditions | Yield |
---|---|
With hydrogenchloride In water at 160℃; Autoclave; | 95% |
Conditions | Yield |
---|---|
Stage #1: sodium tungstate (VI) dihydrate; phosphoric acid; water With hydrogenchloride for 24h; Reflux; Stage #2: potassium chloride at 80℃; for 72h; | 95% |
sodium tungstate (VI) dihydrate
diprop-2-en-1-yl pentanedioate
Aliquat 336
Diglycidyl Glutarate
Conditions | Yield |
---|---|
With phosphoric acid; dihydrogen peroxide In water; toluene | 94% |
sodium tungstate (VI) dihydrate
tetrabutyl phosphonium bromide
Conditions | Yield |
---|---|
With HNO3 In methanol; water byproducts: H2O; (C5(CH3)5)W2O5 in methanol was mixed with an aq. soln. of Na2WO4*2H2O, aq. HNO3 was added, stirring for 2 h, bromide salt in water was added; ppt. was filtered off, washed with small portions of water, methanol anddiethyl ether, dried under vac. at 70°C; elem. anal.; | 94% |
sodium tungstate (VI) dihydrate
1-butylpyridinium bromide
Conditions | Yield |
---|---|
With HNO3 In methanol; water byproducts: H2O; (C5(CH3)5)Mo2O5 in methanol was mixed with an aq. soln. of Na2WO4*2H2O, aq. HNO3 was added, stirring for 2 h, bromide salt in water was added; ppt. was filtered off, washed with small portions of water, methanol anddiethyl ether, dried under vac. at 70°C; elem. anal.; | 93% |
[2,2]bipyridinyl
sodium tungstate (VI) dihydrate
phosphoric acid
water
Conditions | Yield |
---|---|
With HCl In water High Pressure; mixt. of W compd., V compd., bipyridine, H3PO4 and H2O was stirred; HCl was added to pH 1; heated at 180°C for 60 h under autogeneous pressure; cooled to room temp. over 44 h; filtered; washed (EtOH); elem. anal.; | 92% |
potassium permanganate
sodium tungstate (VI) dihydrate
cetyltrimethylammonim bromide
boric acid
manganese(II) acetate
Conditions | Yield |
---|---|
In water; 1,2-dichloro-ethane Mn and W salts mixed in H2O, treated with H3BO3, treated dropwise with excess of hexadecyltrimethylammonium bromide in water with stirring at 80-85°C; washed(water), dried (vac.), elem. anal.; | 92% |
sodium tungstate (VI) dihydrate
N,N-bis(3,5-di-t-butyl-2-hydroxybenzyl)-N',N'-dimethylethylenediamine
Conditions | Yield |
---|---|
With acetic acid In methanol for 2h; Reflux; | 92% |
sodium tungstate (VI) dihydrate
N-octadecyl-α-heptadecylnitrone
Conditions | Yield |
---|---|
With dihydrogen peroxide; sodium tungstate | 91% |
With dihydrogen peroxide; sodium tungstate | 91% |
Conditions | Yield |
---|---|
With HNO3; cetyl-trimethyl-ammonium bromide In water High Pressure; Tb4O7 dissolved in HNO3, extra HNO3 removed by evapn., H2O added, appropriate amounts of Na2WO4*2H2O, then CaCl2 and CTAB added with stirring for half of h, heated in Teflon-lined stainless steel autoclave to 150°C for 12 h, cooled to room temp.; ppt. centrifuged, washed with H2O, EtOH, dried in air at 60°C for12 h; | 90.73% |
sodium tungstate (VI) dihydrate
2-(3,4-dimethoxyphenyl)-ethylamine
(3,4-dimethoxyphenyl)acetaldehyde oxime
Conditions | Yield |
---|---|
With dihydrogen peroxide In methanol; dichloromethane | 90% |
sodium tungstate (VI) dihydrate
phosphoric acid
Conditions | Yield |
---|---|
With hydrogenchloride In water 0.91 equiv. of Na2WO4 (in H2O), 1.0 equiv. of 4 M HCl, 1.00 equiv. of 4 M H3PO4 was added slowly, reflux for >24 h, excess of KCl was added at room temp., ppt. was dried in air by aspiration, dissolved in H2O, 80 °C for 72 h; cooling, keeping at 4 °C for 24 h, elem. anal.; | 90% |
With hydrogenchloride In water 0.79 equiv. of Na2WO4 (in H2O), 0.8 equiv. of 4 M HCl, 0.26 equiv. of 2 M H3PO4 and 0.4 equiv. of 4 M HCl were added simultaneously, reflux for >24 h, excess of KCl was added at room temp., ppt. was dried, dissolved in H2O, 80 °C for >48 h; cooling, keeping at 4 °C for 24 h; | 70% |
Conditions | Yield |
---|---|
In water; acetone byproducts: NaCl; aq. soln. of Na2WO4 dropwise added with magnetic stirring to soln. of (C4H9)3SnCl in mixt. of H2O and acetone, stirred for 5 min; ppt. filtered off, washed with H2O, dried in air at 100°C; elem. anal.; | 90% |
sodium tungstate (VI) dihydrate
water
Conditions | Yield |
---|---|
With KCl; HCl In water dissolved Na9SbW9O33*19.5H2O, Na2WO4*2H2O, KCl, adjusted (HCl) pH to 1.0, boiled for 15 min, hot soln. filtered, added CsCl, stirred for 15 min; filtered, dried (air); elem. anal.; | 90% |
Conditions | Yield |
---|---|
With H2SO4 In ethanol; water 0.1 equiv. of Na2WO4*H2O was added to EtOH soln. of oxime-compd. at roomtemp., pH was adjusted to 2.5 with. concd. H2SO4; ppt. was filtered off, washed with EtOH:H2O=1:1 mixt. (v/v), elem. anal.; | 90% |
sodium tungstate (VI) dihydrate
phosphoric acid
Conditions | Yield |
---|---|
With acetic acid In water at 100℃; | 90% |
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