Sodium tungstate dihydrate supplier

Name
Sodium tungstate dihydrate
EINECS 236-743-4
CAS No. 10213-10-2
Article Data8
CAS DataBase
Density 4.18 g/cm³
Solubility Water: 730 g/L (20 °C)
Melting Point 698 °C
Formula H₂O.Na.1/2O₄W
Boiling Point
Molecular Weight 329.858
Flash Point
Transport Information
Appearance White to slightly yellow crystalline powder
Safety 36-37/39-26
Risk Codes 22-36/38
Molecular Structure
Hazard Symbols Xn
Synonyms Tungsticacid (H₂WO₄), disodium salt, dihydrate (8CI);Disodium tungstate (Na₂WO₄)dihydrate;Sodium tungstate (Na₂WO₄.2H₂O);Sodium tungstate dehydrate;
PSA 98.72000
LogP -0.60380

Synthetic route

: tungsten(VI) oxide

: 1310-73-2
sodium hydroxide

: 10213-10-2
sodium tungstate (VI) dihydrate

Conditions

Conditions	Yield
In acetic acid heating, filtration; evapn., crystn.;
In acetic acid heating, filtration; evapn., crystn.;

: tungsten(VI) oxide

: 497-19-8
sodium carbonate

: 10213-10-2
sodium tungstate (VI) dihydrate

Conditions

Conditions	Yield
In not given heating, filtration; evapn., crystn.;
In not given heating, filtration; evapn., crystn.;

: ortho-tungstic acid

: 1310-73-2
sodium hydroxide

: 10213-10-2
sodium tungstate (VI) dihydrate

Conditions

Conditions	Yield
In not given heating, filtration; evapn., crystn.;
In not given heating, filtration; evapn., crystn.;
In water for 0.333333h;

: 497-19-8
sodium carbonate

: ortho-tungstic acid

: 10213-10-2
sodium tungstate (VI) dihydrate

Conditions

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 decahydrate

: 10213-10-2
sodium tungstate (VI) dihydrate

Conditions

Conditions	Yield
above 6°C;
above 6°C;

: 10213-10-2
sodium tungstate (VI) dihydrate

: lead(II) nitrate

: lead(II) tungstate

Conditions

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%

: 10213-10-2
sodium tungstate (VI) dihydrate

: disodium phosphate heptahydrate

: 83721-04-4
(tetrabutylammonium)4H3PW11O39

Conditions

Conditions	Yield
With hydrogenchloride In water stirring (1 h, room temp.); washing (water and diethyl ether), drying (vac., 60°C); elem. anal.;	99%

: 5470-70-2
Methyl 6-methylnicotinate

: 10213-10-2
sodium tungstate (VI) dihydrate

: 49668-89-5
5-(methoxycarbonyl)-2-methylpyridine 1-oxide

Conditions

Conditions	Yield
With dihydrogen peroxide In methanol; water	98%

: 10213-10-2
sodium tungstate (VI) dihydrate

: 2-nitrophenylphenyl sulfide

: 2-nitrophenylphenyl sulfone

Conditions

Conditions	Yield
With dihydrogen peroxide; tetra(n-butyl)ammonium hydrogen sulfate In toluene	97.8%

: 10213-10-2
sodium tungstate (VI) dihydrate

: 2-nitrophenylphenyl sulfide

: 56-93-9
benzyltrimethylammonium chloride

: 2-nitrophenylphenyl sulfone

Conditions

Conditions	Yield
With sulfuric acid; dihydrogen peroxide In toluene	97.6%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: 507-28-8, 14842-08-1
tetraphenylarsonium chloride

: 2As(C6H5)4(1+)*W2O3(O2)4(2-)=(As(C6H5)4)2[W2O3(O2)4]

Conditions

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%

: 10213-10-2
sodium tungstate (VI) dihydrate

: 20427-59-2
copper hydroxide

: 107-15-3
ethylenediamine

: [Cu(ethylenediamine)3]WO4

Conditions

Conditions	Yield
In water for 48h;	97%

...Expand

: 470716-52-0
2-[[(4-chlorophenyl)thio]methyl]-1,4-difluorobenzene

: sodium metabisulfite

: 10213-10-2
sodium tungstate (VI) dihydrate

: 470716-51-9
2-[[(4-chlorophenyl)sulfonyl]methyl]-1,4-difluorobenzene

Conditions

Conditions	Yield
With sulfuric acid; dihydrogen peroxide In n-heptane; water; toluene	96%

...Expand

: 7446-07-3
tellurium(IV) oxide

: 10213-10-2
sodium tungstate (VI) dihydrate

: Na2WTe4O12

Conditions

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);

: 10213-10-2
sodium tungstate (VI) dihydrate

: 5922-92-9
tetrahexylammonium chloride

: 2N((CH2)5CH3)4(1+)*W2O3(O2)4(2-)=(N((CH2)5CH3)4)2[W2O3(O2)4]

Conditions

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%

: 10213-10-2
sodium tungstate (VI) dihydrate

: copper(II) choride dihydrate

: 86119-84-8, 7664-38-2
phosphoric acid

: 107-15-3
ethylenediamine

: [(Cu(ethylenediamine)2)3PW11CuClO39]*6H2O

Conditions

Conditions	Yield
In water High Pressure; mixt. Na2WO42H2O, H3PO4, CuCl22H2O, 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%

...Expand

: 7446-08-4
selenium(IV) oxide

: 10213-10-2
sodium tungstate (VI) dihydrate

: copper(II) choride dihydrate

: cesium chloride

: 7732-18-5
water

: Cs6Na[(α-SeW9O33)2Cu3(H2O)3Cs3(H2O)6]*7H2O

Conditions

Conditions	Yield
With sodium acetate buffer In water SeO2 and Na2WO42H2O added to soln. of CuCl22H2O (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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: potassium chloride

: 7732-18-5
water

: arsenic(III) trioxide

: K14[WO(H2O)(α-AsW9O33)2]

Conditions

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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: tetraoxo-μ-oxobis(pentamethylcyclopentadienyl)dimolybdenum(VI)

: 2751-90-8
tetraphenylphosphonium bromide

: P(C6H5)4(1+)*(C5(CH3)5)MoW5O18(1-)=P(C6H5)4(C5(CH3)5)MoW5O18

Conditions

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%

...Expand

: 13520-92-8
ziconium(IV) oxychloride octahydrate

: 10213-10-2
sodium tungstate (VI) dihydrate

: ZrW2O7((OH)1.5Cl0.5)*2H2O

Conditions

Conditions	Yield
With hydrogenchloride In water at 160℃; Autoclave;	95%

: 10213-10-2
sodium tungstate (VI) dihydrate

: 86119-84-8, 7664-38-2
phosphoric acid

: potassium chloride

: 7732-18-5
water

: K6[α-P2W18O62] * 14 water

Conditions

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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: 41226-64-6
diprop-2-en-1-yl pentanedioate

: 5137-55-3
Aliquat 336

: 133548-06-8
Diglycidyl Glutarate

Conditions

Conditions	Yield
With phosphoric acid; dihydrogen peroxide In water; toluene	94%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: tetraoxo-μ-oxobis(pentamethylcyclopentadienyl)ditungsten(VI)

: 3115-68-2
tetrabutyl phosphonium bromide

: P(C4H9)4(1+)*(C5(CH3)5)W6O18(1-)=P(C4H9)4(C5(CH3)5)W6O18

Conditions

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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: tetraoxo-μ-oxobis(pentamethylcyclopentadienyl)dimolybdenum(VI)

: 874-80-6
1-butylpyridinium bromide

: C4H9NC5H5(1+)*(C5(CH3)5)MoW5O18(1-)=C4H9NC5H5(C5(CH3)5)MoW5O18

Conditions

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%

...Expand

: 366-18-7
[2,2]bipyridinyl

: 10213-10-2
sodium tungstate (VI) dihydrate

: vanadyl(IV) sulphate pentahydrate

: 86119-84-8, 7664-38-2
phosphoric acid

: 7732-18-5
water

: [V8O14(2,2'-bipyridine)8(PO4)2][PW11VO40](2,2'-bipyridine)*12H2O

Conditions

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%

...Expand

: 7722-64-7
potassium permanganate

: 10213-10-2
sodium tungstate (VI) dihydrate

: 57-09-0
cetyltrimethylammonim bromide

: 11113-50-1
boric acid

: 638-38-0, 993-02-2, 2180-18-9, 15411-95-7, 22981-23-3, 27004-39-3
manganese(II) acetate

: 4C16H33(CH3)3N(1+)*2H(1+)*Mn(3+)*H2O*BW11O39(9-)*10H2O=[C16H33(CH3)3N]4H2[Mn(H2O)BW11O39]*10H2O

Conditions

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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: 188713-27-1
N,N-bis(3,5-di-t-butyl-2-hydroxybenzyl)-N',N'-dimethylethylenediamine

: [dioxotungsten(VI)(O(2,4-bis-tert-butyl-phenyl)CH2N(CH2CH2N(CH3)2)CH2(2,4-bis-tert-butyl-phenyl)O)]

Conditions

Conditions	Yield
With acetic acid In methanol for 2h; Reflux;	92%

: 10213-10-2
sodium tungstate (VI) dihydrate

: N,N-dioctadecylhydroxylamine

: 124029-68-1
N-octadecyl-α-heptadecylnitrone

Conditions

Conditions	Yield
With dihydrogen peroxide; sodium tungstate	91%
With dihydrogen peroxide; sodium tungstate	91%

: 10213-10-2
sodium tungstate (VI) dihydrate

: terbium(III, IV) oxide

: calcium chloride

: Ca0.92Tb0.08WO4

Conditions

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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: 120-20-7
2-(3,4-dimethoxyphenyl)-ethylamine

: 131371-75-0
(3,4-dimethoxyphenyl)acetaldehyde oxime

Conditions

Conditions	Yield
With dihydrogen peroxide In methanol; dichloromethane	90%

: 10213-10-2
sodium tungstate (VI) dihydrate

: 86119-84-8, 7664-38-2
phosphoric acid

: potassium chloride

: K6P2W18O62*14H2O, α

Conditions

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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: 1461-22-9
tributyltin chloride

: (n-Bu3SnO)2WO2

Conditions

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%

: 10213-10-2
sodium tungstate (VI) dihydrate

: Na9(α-SbW9O33)*19.5H2O

: cesium chloride

: 7732-18-5
water

: Cs26[Sb6W65O217(H2O)7]*50H2O

Conditions

Conditions	Yield
With KCl; HCl In water dissolved Na9SbW9O3319.5H2O, Na2WO42H2O, 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%

...Expand

: 10213-10-2
sodium tungstate (VI) dihydrate

: 441-38-3
benzoin oxime

: WO2(C6H5CHOC(NOH)C6H5)2*H2O

Conditions

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%

: 10213-10-2
sodium tungstate (VI) dihydrate

: 86119-84-8, 7664-38-2
phosphoric acid

: Na20[P6W18O79]*37H2O

Conditions

Conditions	Yield
With acetic acid In water at 100℃;	90%

Sodium tungstate dihydrate Standards and Recommendations

ACGIH TLV: TWA 5 mg(W)/m³; STEL 10 mg(W)/m³
NIOSH REL: (Tungsten) TWA 1 mg(W)/m³

Sodium tungstate dihydrate Specification

The Sodium tungstate, dihydrate with CAS registry number of 10213-10-2 is also known as Tungsten, diolatodioxo-, sodium salt, hydrate (1:2:2). The IUPAC name is Disodium dioxido(dioxo)tungsten dihydrate. Its EINECS registry number is 236-743-4. In addition, the formula is H₂O.Na.1/2O₄W and the molecular weight is 164.62. This chemical is a white to slightly yellow crystalline powder and should be stored in cool and dry room.

Physical properties about Sodium tungstate, dihydrate are: (1)#H bond acceptors: 4; (2)#H bond donors: 2; (3)Exact Mass: 329.93126; (4)MonoIsotopic Mass: 329.93126; (5)Topological Polar Surface Area: 82.3; (6)Heavy Atom Count: 9; (7)Covalently-Bonded Unit Count: 5.

Preparation of Sodium tungstate, dihydrate. Firstly, the wolframite is crushed to 320 mesh, and reacts with 30% sodium hydroxide. Then the reaction mixture reacts with calcium chloride, hydrochloric acid and sodium hydroxide by turns to obtain sodium tungstate. At last, product is obtained after evaporation, crystallization, centrifugal dewatering and drying.

(1) MnWO₄·FeWO₄+4NaOH→2NaWO₄+Fe(OH)₂·Mb(OH)₂(2) NaWO₄+CaCl₂→CaWO₄+2NaCl
(3) CaWO₄+2HCl→CaCl₂+H₂WO₄(4)H₂WO₄+2NaOH→Na₂WO₄·2H₂O

Uses of Sodium tungstate, dihydrate: it is used for manufacturing tungsten, tungsten acid and tungsten salts. It's also used as mordant, pigment, catalyst, fire retardant fabric, chemical reagent and inhibitor.

When you are using this chemical, please be cautious about it. As a chemical, it is irritating to eyes and skin. Besides, it is harmful if swallowed. During using it, wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
1. Canonical SMILES: O.O.[O-][W](=O)(=O)[O-].[Na+].[Na+]
2. InChI:InChI=1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;
3. InChIKey: WPZFLQRLSGVIAA-UHFFFAOYSA-N

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	145mg/kg (145mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: COMA	Archives Internationales de Pharmacodynamie et de Therapie. Vol. 154, Pg. 243, 1965.
rat	LD50	intraperitoneal	204mg/kg (204mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: COMA	Archives Internationales de Pharmacodynamie et de Therapie. Vol. 154, Pg. 243, 1965.
rat	LD50	subcutaneous	251mg/kg (251mg/kg)		American Journal of the Medical Sciences. Vol. 199, Pg. 668, 1940.

Product Name

Sodium tungstate dihydrate

Synthetic route

Sodium tungstate dihydrate Standards and Recommendations

Sodium tungstate dihydrate Specification

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