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Merck
CN

72070

钨酸钠 二水合物

puriss. p.a., ACS reagent, ≥99.0% (AT)

别名:

钨酸 钠盐 二水合物

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关于此项目

线性分子式:
Na2WO4 · 2H2O
化学文摘社编号:
10213-10-2
分子量:
329.85
EC Number:
236-743-4
UNSPSC Code:
12352300
PubChem Substance ID:
24886359
MDL number:
MFCD00149190

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InChI key

WPZFLQRLSGVIAA-UHFFFAOYSA-N

InChI

1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;

SMILES string

O.O.[Na+].[Na+].[O-][W]([O-])(=O)=O

grade

ACS reagent, puriss. p.a.

assay

≥99.0% (AT)

greener alternative product characteristics

Catalysis
Learn more about the Principles of Green Chemistry.

impurities

≤0.001% total nitrogen (N), ≤0.05% free alkali (as NaOH)

mp

698 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

cation traces

As: ≤1 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤10 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤10 mg/kg, Ni: ≤10 mg/kg, Pb: ≤10 mg/kg, Zn: ≤5 mg/kg

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Application

Catalyst for greener oxidation of alcohols and sulfides using hydrogen peroxide. Also catalyzes epoxidations and oxidative cleavage of olefins.

Noyori Oxidation (Sodium Tungstate Dihydrate, Hydrogen Peroxide, Methyltri-n-octylammonium Hydrogen Sulfate, Phosphonic Acid)

Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

存储类别

13 - Non Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

法规信息

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分析证书(COA)

Lot/Batch Number
BCBK2316V
BCBH2874V
BCBG1722V
BCBC7690V
BCBC7690

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M Milagros Gómez-Gómez et al.
Talanta, 84(4), 1011-1018 (2011-05-03)
It is known that oral administration of sodium tungstate preserves the pancreatic beta cell function in diabetic rats. Healthy and streptozotocin-induced diabetic rats were treated with sodium tungstate for one, three or six weeks, after which the species of W
M Amigó-Correig et al.
Diabetes, obesity & metabolism, 13(3), 235-242 (2011-01-06)
Sodium tungstate is an anti-obesity drug targeting peripheral tissues. In vivo, sodium tungstate reduces body weight gain and food intake through increasing energy expenditure and lipid oxidation, but it also modulates hypothalamic gene expression when orally administered, raising the possibility
Andrew R Osterburg et al.
Journal of immunotoxicology, 7(3), 174-182 (2010-02-25)
The potential for adverse health effects of using tungsten and its alloys in military munitions are an important concern to both civilians and the US military. The toxicological implications of exposure to tungsten, its alloys, and the soluble tungstate (Na(2)WO(4))
Delia Zafra et al.
FEBS letters, 587(3), 291-296 (2012-12-25)
Tungstate treatment ameliorates experimental diabetes by increasing liver glycogen deposition through an as yet unidentified mechanism. The signalling mechanism of tungstate was studied in CHOIR cells and primary cultured hepatocytes. This compound exerted its pro-glycogenic effects through a new G-protein-dependent
Gustavo S Guandalini et al.
Chemical research in toxicology, 24(4), 488-493 (2011-03-08)
Heavy metal tungsten alloys have replaced lead and depleted uranium in many munitions applications, due to public perception of these elements as environmentally unsafe. Tungsten materials left in the environment may become bioaccessible as tungstate, which might lead to population
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