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Silicates, borates and other salts

Sodium molybdate

Also known as Disodium molybdate, Sodium molybdate(VI), Natriummolybdat

CAS 7631-95-0Formula MoNa2O4Molar mass 205.92 g/molEC 231-551-7
GHS signal word: Warning. Pictograms: Harmful or irritant 130 suppliers listed
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Sodium molybdate chemical structure, MoNa2O4, CAS 7631-95-0
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Powder
Melting point
687 °C
Density
3.78 g/cm³
Solubility
Solubility in water, g/100ml at 100 °C: 84
HS code
284170
Category
Silicates, borates and other salts
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Sodium molybdate?

Plain description, key identifiers and synonyms

Sodium molybdate (anhydrous) is an inorganic sodium salt having molybdate as the counterion. It has a role as a NMR chemical shift reference compound and a poison. It contains a molybdate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
disodium, dioxido(dioxo)molybdenum
CAS number
7631-95-0Other or deprecated CAS: 13466-16-5
EC number
231-551-7
Molecular formula
MoNa2O4
UNII
948QAQ08I1
MDL number
MFCD00003486
InChIKey
TVXXNOYZHKPKGW-UHFFFAOYSA-N
InChI
InChI=1S/Mo.2Na.4O/q;2*+1;;;2*-1
SMILES (canonical and isomeric)
[O-][Mo](=O)(=O)[O-].[Na+].[Na+]

Synonyms

  • Disodium molybdate
  • Sodium molybdate(VI)
  • Natriummolybdat
  • sodium molybdenum oxide
  • Molybdic acid, disodium salt
  • sodium molybdate (anhydrous)
  • Na2MoO4
  • Anhydric sodium molybdate
  • Molybdate (MoO42-), disodium, (T-4)-
  • Molybdenum (as sodium)
  • Molybdate disodium
  • Sodium molybdate (VAN)
  • Sodium molybdate (Na2MoO4)
  • disodium, dioxido(dioxo)molybdenum
  • Molybdic acid (H2MoO4) , disodium salt
  • disodium tetraoxomolybdate
  • Molybdate (MoO42-), disodium, (beta-4)-
  • Sodium molybdenum oxide, anhydrous, Mo 46.2%
  • Molybdate (MoO42-), sodium (1:2), (T-4)-
  • Sodium Molybdate Anhydrous
  • Sodium dimolybdate
  • Sodium Molybdate, anhydrous
  • Molybdic acid (H2MoO4), disodium salt
  • Sodiummolybdate
  • sodium molybdate (anh.)
Show all 30 synonyms
  • Sodium molybdate, >=98%
  • Sodium molybdate - anhydrous
  • sodium dioxido(dioxo)molybdenum
  • Sodium molybdenum oxide, anhydrous
  • Sodium molybdate, LR, >=99.5%

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Powderexp.
Melting point
687 °Cexp.
Density
3.78 g/cm³exp.
Solubility
Solubility in water, g/100ml at 100 °C: 84exp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
205.92 g/molcalc.
Exact mass
207.8646 Dacalc.
LogP (octanol/water)
-8.61calc.
Topological polar surface area
80.26 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
  • H335May cause respiratory irritation.
Precautionary statements (17)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Sodium molybdate suppliers

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Where suppliers are based

130 suppliers in 27 countries

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Sodium molybdate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Pigment, Intermediate, Anti-scaling agent, Corrosion inhibitor, Soil amendments (fertilizers), Processing aids not otherwise specified, Other, Anti-adhesive/cohesive.

Consumer uses: Other, Anti-freeze agent, Anti-adhesive/cohesive, Laboratory chemicals, Pigment, Soil amendments (fertilizers), Corrosion inhibitor.

Roles

  • NMR chemical shift reference compound
  • poison
  • reference compound

Functional uses

  • Corrosion inhibitor
  • Preservative

Pharmacology

Sodium Molybdate is a crystalline powder essential for the metabolism and development of plants and animals as a cofactor for enzymes. (NCI)

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Sodium molybdate is traded under.

HS 2841.70Indicative HS code

Molybdates

World exports in 2024
$297M
−1.5% vs 2023, imports $263M
2019 to 2024
Top exporters
  1. United States21.7%
  2. Netherlands19.7%
  3. Chile13.7%
Top importers
  1. China17.5%
  2. United States13.6%
  3. Denmark7.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Sodium molybdate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Sodium molybdate, based on the data on this page

What is Sodium molybdate?

Sodium molybdate (anhydrous) is an inorganic sodium salt having molybdate as the counterion. It has a role as a NMR chemical shift reference compound and a poison. It contains a molybdate.

What is the CAS number of Sodium molybdate?

The CAS registry number of Sodium molybdate is 7631-95-0. Other or deprecated CAS numbers: 13466-16-5.

What is the molecular formula and weight of Sodium molybdate?

The molecular formula of Sodium molybdate is MoNa2O4 and its molar mass is 205.92 g/mol.

What is Sodium molybdate used for?

Industrial uses: Pigment, Intermediate, Anti-scaling agent, Corrosion inhibitor, Soil amendments (fertilizers), Processing aids not otherwise specified, Other, Anti-adhesive/cohesive.

Is Sodium molybdate hazardous?

Sodium molybdate carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Sodium molybdate?

Sodium molybdate is usually classified under HS code 284170 (Molybdates). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sodium molybdate?

CompoundList lists 130 suppliers of Sodium molybdate in India, United States, China, United Kingdom and 23 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Sodium molybdate in India?

31 suppliers in India list Sodium molybdate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Sodium molybdate?

Suppliers quote Sodium molybdate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Sodium molybdate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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