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| CAS No.: | 7631-95-0 |
|---|---|
| Name: | Sodium molybdate |
| Article Data: | 16 |
| Molecular Structure: | |
|
|
|
| Formula: | MoNa2O4 |
| Molecular Weight: | 241.948 |
| Synonyms: | Molybdate(MoO42-), disodium, (T-4)- (9CI);Molybdic acid (H2MoO4), disodium salt (8CI);Disodium molybdate;Disodium molybdate (Na2MoO4);Disodium tetraoxomolybdate;Disodium tetraoxomolybdate(2-);Molybdenum sodium oxide (MoNa2O4);Molybdenumsodium oxide (Na2MoO4);NSC 77389;Sodium molybdate(Na2MoO4);Sodium molybdenate (Na2MoO4);Sodium molybdenum oxide (Na2MoO4);Sodium tetraoxomolybdate(2-); |
| EINECS: | 231-551-7 |
| Density: | 3.78 g/cm3 |
| Melting Point: | 687 °C(lit.) |
| Boiling Point: | 100oC |
| Solubility: | It is soluble in water. |
| Appearance: | solid |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 36/37/38 |
| Safety: | 26-36 |
| PSA: | 80.26000 |
| LogP: | -0.47520 |
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- 7631-95-0
sodium molybdate dihydrate
| Conditions | Yield |
|---|---|
| In neat (no solvent) decompn. of Na2MoO4*10H2O at ambient temp.;; | |
| In neat (no solvent) decompn. of Na2MoO4*10H2O at room temp. during a few days;; | |
| In neat (no solvent) decompn. of Na2MoO4*10H2O at room temp. during a few days;; | |
| In neat (no solvent) decompn. of Na2MoO4*10H2O at ambient temp.;; |
| Conditions | Yield |
|---|---|
| In water solving of Na2MoO4 in H2O;; concn. of the soln.; crystn.; filtration; washing with small amt. of H2O; drying between paper and then over CaO and H2SO4 for 24 hours;; | |
| In water solving of Na2MoO4 in H2O;; concn. of the soln.; crystn.; filtration; washing with small amt. of H2O; drying between paper and then over CaO and H2SO4 for 24 hours;; |
| Conditions | Yield |
|---|---|
| In water neutralization of an aq. soln. of MoO3 with Na2CO3;; evapn. at ambient temp.;; | |
| In water neutralization of an aq. soln. of MoO3 with Na2CO3;; evapn. at ambient temp.;; |
| Conditions | Yield |
|---|---|
| In sodium hydroxide byproducts: NH3; addn. of an excess of NaOH to a soln. of ammonium molybdate; boiling til formation of NH3 stops;; addn. of alc.; pptn.; washing with alc.; drying; recrystn. from H2O;; | |
| In sodium hydroxide boiling of equival. amts of ammonium molybdate and NaOH;; recrystn.;; | |
| In sodium hydroxide aq. NaOH; boiling of equival. amts of ammonium molybdate and NaOH;; recrystn.;; | |
| In sodium hydroxide byproducts: NH3; aq. NaOH; addn. of an excess of NaOH to a soln. of ammonium molybdate; boiling til formation of NH3 stops;; addn. of alc.; pptn.; washing with alc.; drying; recrystn. from H2O;; |
- 7631-95-0
sodium molybdate dihydrate
| Conditions | Yield |
|---|---|
| With water In water above 10°C; | |
| With H2O In water above 10°C; |
A
- 7631-95-0
sodium molybdate dihydrate
B
- 765876-75-3
terbium(III) phosphate
| Conditions | Yield |
|---|---|
| In neat (no solvent) heated in alundum crucibles under inert gas flow at a rate of 20 K/min in the range 20-500°C and 10 K/min in the range of 500-900°C; identified by X-ray diffraction; |
A
- 7631-95-0
sodium molybdate dihydrate
B
- 753426-80-1
thulium(III) phosphate
| Conditions | Yield |
|---|---|
| In neat (no solvent) heated in alundum crucibles under inert gas flow at a rate of 20 K/min in the range 20-500°C and 10 K/min in the range of 500-900°C; identified by X-ray diffraction; |
A
- 7631-95-0
sodium molybdate dihydrate
B
- 791563-17-2
holmium(III) orthophosphate
| Conditions | Yield |
|---|---|
| In neat (no solvent) heated in alundum crucibles under inert gas flow at a rate of 20 K/min in the range 20-500°C and 10 K/min in the range of 500-900°C; identified by X-ray diffraction; |
A
- 7631-95-0
sodium molybdate dihydrate
B
- 785025-30-1
dysprosium(III) orthophosphate
| Conditions | Yield |
|---|---|
| In neat (no solvent) heated in alundum crucibles under inert gas flow at a rate of 20 K/min in the range 20-500°C and 10 K/min in the range of 500-900°C; identified by X-ray diffraction; |
A
- 7631-95-0
sodium molybdate dihydrate
B
- 775556-30-4
erbium(III) orthophosphate
| Conditions | Yield |
|---|---|
| In neat (no solvent) heated in alundum crucibles under inert gas flow at a rate of 20 K/min in the range 20-500°C and 10 K/min in the range of 500-900°C; identified by X-ray diffraction; |
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Consensus Reports
Standards and Recommendations
ACGIH TLV: TWA Soluble Compounds: TWA 0.5 mg(Mo)/m3 Confirmed Animal Carcinogen with Unknown Relevance to Humans
Specification
The Disodium molybdate, with the CAS registry number 7631-95-0, is also known as Molybdic acid (H2MoO4) , disodium salt. It belongs to the product categories of Inorganic & Organic Chemicals; Inorganic Chemicals; Inorganics; Catalysis and Inorganic Chemistry; Chemical Synthesis; Molybdenum. Its EINECS registry number is 231-551-7. This chemical's molecular formula is MoNa2O4 and molecular weight is 205.92. Its IUPAC name is called disodium dioxido(dioxo)molybdenum. This chemical's classification codes are Mutation data; Reproductive Effect.
Physical properties of Disodium molybdate: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 4; (3)Rotatable Bond Count: 0; (4)Exact Mass: 207.864606; (5)MonoIsotopic Mass: 207.864606; (6)Topological Polar Surface Area: 80.3; (7)Heavy Atom Count: 7; (8)Formal Charge: 0; (9)Complexity: 62.2; (10)Covalently-Bonded Unit Count: 3.
Preparation: this chemical can be prepared by molybdenum trioxide and sodium carbonate.
Uses of Disodium molybdate: this chemical can be used for the preparation of molybdenum salt and dyes, pigments, catalyst, corrosion inhibitor, etc. Besides, it also can be used for metal corrosion inhibitor, except furring agent, bleaching agent and promote skin and hair ulcer.
When you are using this chemical, please be cautious about it as the following:
This chemical may cause inflammation to the skin or other mucous membranes. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing.
You can still convert the following datas into molecular structure:
(1)Canonical SMILES: [O-][Mo](=O)(=O)[O-].[Na+].[Na+]
(2)InChI: InChI=1S/Mo.2Na.4O/q;2*+1;;;2*-1
(3)InChIKey: TVXXNOYZHKPKGW-UHFFFAOYSA-N
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| cat | LD50 | intravenous | 917mg/kg (917mg/kg) | VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION | Agressologie. Revue Internationale de Physio-Biologie et de Pharmacologie Appliquees aux Effets de l'Agression. Vol. 8, Pg. 51, 1967. |
| mouse | LD50 | intraperitoneal | 303mg/kg (303mg/kg) | Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975. | |
| mouse | LD50 | subcutaneous | 570mg/kg (570mg/kg) | Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 244, Pg. 17, 1962. | |
| rat | LC50 | inhalation | > 2080mg/m3/4H (2080mg/m3) | Cyprus Copper Company. Vol. 18JUN1991, | |
| rat | LD50 | intraperitoneal | 576mg/kg (576mg/kg) | Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975. | |
| rat | LD50 | oral | 4gm/kg (4000mg/kg) | Cyprus Copper Company. Vol. 18JUN1991, |