Disodium Molybdate
- CAS No.
- 7631-95-0
- Chemical Name:
- Disodium Molybdate
- Synonyms
- SODIUM MOLYBDENUM OXIDE;molybdic;Disodium molybdate;Anhydrous sodium molybdate;Natriummolybdat;Sodium molybdat;SODIUM MOLYBDATE;disodiummolybdate;SodiumMolybdateGr;Sodamidemolybdate
- CBNumber:
- CB00124266
- Molecular Formula:
- MoNa2O4
- Molecular Weight:
- 205.91714
- MDL Number:
- MFCD00003486
- MOL File:
- 7631-95-0.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 687 °C (lit.) |
|---|---|
| Density | 3.78 g/mL at 25 °C (lit.) |
| refractive index | 1.714 |
| storage temp. | Store at 4°C, protect from light, stored under nitrogen |
| solubility | insoluble in EtOH; insoluble in DMSO; ≥20.6 mg/mL in H2O |
| form | Powder |
| Specific Gravity | 3.28 |
| color | White |
| Odor | odorless |
| Water Solubility | It is soluble in water. |
| Specific Heat Capacity | Cp(crystal): 0.69 J/(g·K), at 25℃ |
| Sensitive | Hygroscopic |
| Merck | 14,8645 |
| Exposure limits |
ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 1000 mg/m3 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Cosmetics Ingredients Functions | ANTICORROSIVE |
| InChI | 1S/Mo.2Na.4O/q;2*+1;;;2*-1 |
| InChIKey | TVXXNOYZHKPKGW-UHFFFAOYSA-N |
| SMILES | [Na+].[Na+].[O-][Mo]([O-])(=O)=O |
| CAS DataBase Reference | 7631-95-0(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 948QAQ08I1 |
| NIST Chemistry Reference | sodium molybdate(VI)(7631-95-0) |
| EPA Substance Registry System | Disodium molybdate (7631-95-0) |
| UNSPSC Code | 12352302 |
| NACRES | NA.55 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H303-H332 | |||||||||
| Precautionary statements | P261-P271-P304+P340-P312a | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | QA5075000 | |||||||||
| TSCA | TSCA listed | |||||||||
| Storage Class | 13 - Non Combustible Solids | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Disodium Molybdate price More Price(31)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 243655 | Sodium molybdate ≥98% | 7631-95-0 | 5g | $67.9 | 2026-04-30 | Buy |
| Sigma-Aldrich | 243655 | Sodium molybdate ≥98% | 7631-95-0 | 100g | $111 | 2026-04-30 | Buy |
| Strem Chemicals | 93-1160 | Sodium molybdate, anhydrous, 98+% 98+% | 7631-95-0 | 100g | $48 | 2026-04-30 | Buy |
| Strem Chemicals | 93-1160 | Sodium molybdate, anhydrous, 98+% 98+% | 7631-95-0 | 500g | $178 | 2026-04-30 | Buy |
| GFS CHEMICALS | 68162 | Sodium Molybdate, Anhydrous, Reagent | 7631-95-0 | 100G | $179.51 | 2026-06-03 | Buy |
Disodium Molybdate Chemical Properties, Uses, Production
Chemical Properties
Sodium molybdate is the sodium salt of molybdic acid. It forms white, rhombic crystals that are sparingly soluble in water and insoluble in acetone. Crystallization from an alkaline aqueous solution (pH above 8) yields the dihydrate, which appears as white rhombohedral crystals with a relative density of 3.28. In this structure, the molybdate anion (MoO₄²⁻) exhibits a regular tetrahedral coordination. Upon heating to 100°C, the dihydrate loses two water molecules to form the anhydrous compound. The anhydrous form is readily soluble in water but insoluble in ethyl acetate.
Gradually acidifying a sodium molybdate solution to lower its pH induces the polymerization of molybdate ions, forming various polymolybdates such as sodium dimolybdate, trimolybdate, tetramolybdate, octamolybdate, and decamolybdate.
Although molybdenum can form compounds in oxidation states from zero to +6, only the hexavalent molybdate compounds are stable. The primary ore for producing molybdate raw materials is molybdenite (MoS₂).
Uses
Sodium Molybdate is used in method for preparing fermentation medium with reduced color and viscosity.
Uses
Sodium molybdate (Na2MO4) may be used as an electrolyte additive, for use in electrochemical capacitors. Addition of Na2MO4 as an electrolyte additive may result in enhanced capacitance, corrosion prevention and stabilized performance.
It may also be used as a catalyst during the manufacture of paints and dyes.
Uses
Reagent in analytical chemistry, paint pigment, production of molybdated toners and lakes, metal finishing, brightening agent for zinc plating, corro- sion inhibitor, catalyst in dye and pigment produc- tion, additive for fertilizers and feeds, micronutri- ent.
Preparation
Sodium molybdate dihydrate, which is obtained by evaporating an aqueous solution of molybdenum trioxide and sodium hydroxide, can be converted to the anhydrous form by heating at 100 °C.
Definition
ChEBI: Sodium molybdate (anhydrous) is an inorganic sodium salt having molybdate as the counterion. It has a role as a poison and a NMR chemical shift reference compound. It contains a molybdate.
General Description
Sodium molybdate has corrosion resistant properties. On heating, it undergoes degradation and releases Na2O fumes.
Hazard
Irritant.
Flammability and Explosibility
Non flammable
reaction suitability
reagent type: catalyst
core: molybdenum
Agricultural Uses
Sodium molybdate (NazMoO4-2H2O), which is an
important molybdenum source, is applied along with
other fertilizers or as a foliar spray (with 39%
molybdenum). Sodium molybdate is the sodium salt of
molybdic acid. Fusing molybdenum oxide with sodium
carbonate or hydroxide makes sodium molybdate.
Molybdenum is an essential component of the enzyme
nitrate reductase which catalyzes the conversion of
nitrate (NO3-) to nitrite (NO2-). It is also a component of
the nitrogenase enzyme involved in nitrogen fixation by
root nodule bacteria of leguminous crops. Soaking seeds
in sodium molybdate solution (made with slurry or dust)
before sowing is an effective seed treatment. Sodium
molybdate, the most commonly used fertilizer supplying
molybdenum, is used as foliar spray, or in mixed
fertilizers. It is also used in seed treatment.
Biological Activity
sodium molybdate is an acid phosphatase inhibitor. the osteoclastic acid phosphatase isoenzyme, secreted by osteoclasts, is a member of a widely-distributed class of iron-containing proteins with acid phosphatase activity. elevated plasma isoenzyme levels are associated with increased bone turnover in metabolic disease. by inhibiting this class of acid phosphatases, sodium molybdate is capable of abolishing bone resorption. in addition, sodium molybdate has been shown to stabilize the nonactivated glucocorticoid-receptor complex.1. zaidi m, moonga b, moss dw, et al. inhibition of osteoclastic acid phosphatase abolishes bone resorption. biochemical and biophysical research communications, 1989, 159(1): 68-71.2. denis m, wikström ac, gustafsson ja. the molybdate-stabilized nonactivated glucocorticoid receptor contains a dimer of mr 90,000 non-hormone-binding protein. journal of biological chemistry, 1987, 262(24): 11803-11806.
Safety Profile
Poison by intraperitoneal route. Moderately toxic by subcutaneous and intravenous routes. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of Na2O. See also MOLYBDENUM COMPOUNDS.
Toxics Screening Level
The screening level for the elemental molybdenum and insoluble molybdenum compounds is 30 μg/m3, while the screening level for soluble molybdenum compounds is 5 μg/m3 based on an 8 hour averaging time.
Disodium Molybdate Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Tianjinshi Haydn Science &Technology Development Co.,Ltd | 022-88294560 13642153692 | 313878807@qq.com | China | 28 | 58 |
| Jingzhou Yinjie Chemical Co., Ltd | 18008658728 | 2718637152@qq.com | China | 2819 | 58 |
| wuhan geeyeschem chemical | 027-1537705-6467 15377056467 | 3410849474@qq.com | China | 2018 | 58 |
| Wuhan Jiyesheng Chemical Co., Ltd | 15927120776 | 3337315774@qq.com | China | 2123 | 58 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 18621169109 | market03@meryer.com | China | 27963 | 58 |
| Guangdong Daxiao Chemical Co., Ltd | 1866-171603 18666171603 | 3989665367@qq.com | China | 4982 | 58 |
| Wuhan Jiyesheng Chemical Co., Ltd | 027-83360216 18040558719 | 3929577992@qq.com | China | 2180 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
View Latest Price from Disodium Molybdate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-20 | Sodium molybdate
7631-95-0
|
$10.00 | 1KG | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-06-20 | FERRIC MOLYBDATE
13769-81-8
|
$35.00-100.00 | 1kg | 0.99 | 20 tons per month | Hebei Yanxi Chemical Co., Ltd. | |
 |
2025-04-15 | Sodium molybdate
7631-95-0
|
$30.00 | 1kg | 99% | 20ton | Hebei Zhuanglai Chemical Trading Co.,Ltd |
-
- Sodium molybdate
7631-95-0
- $10.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- FERRIC MOLYBDATE
13769-81-8
- $35.00-100.00
- 0.99
- Hebei Yanxi Chemical Co., Ltd.
-
- Sodium molybdate
7631-95-0
- $30.00
- 99%
- Hebei Zhuanglai Chemical Trading Co.,Ltd
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