CompoundList
Sign in
Metals, alloys and elements

Tungsten

Also known as Wolfram, Tungsten ion, VA (tungsten)

CAS 7440-33-7Formula WMolar mass 183.84 g/molEC 231-143-9
GHS signal word: Danger. Pictograms: Flammable 103 suppliers listed
Get quotes Compare 103 suppliers
Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
Appearance
Steel-gray to tin-white metal, body centered cubic structure
Melting point
3,410 °C
Boiling point
5,900 °C
Density
19.3 g/cm³
Solubility
Solubility in water: none
HS code
810110
Category
Metals, alloys and elements
UN number
UN 3089
Illustrative photo, metallic grey powder in a glass bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Tungsten?

Plain description, key identifiers and synonyms

Tungsten is a chromium group element atom. It has a role as a micronutrient.

Tungsten is a chemical element with symbol W and atomic number 74.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tungsten
CAS number
7440-33-7 CAS number cross-checked
EC number
231-143-9
Molecular formula
W
UNII
V9306CXO6G
MDL number
MFCD00011461
InChIKey
WFKWXMTUELFFGS-UHFFFAOYSA-N
InChI
InChI=1S/W
SMILES (canonical and isomeric)
[W]

Synonyms

  • Wolfram
  • Tungsten ion
  • VA (tungsten)
  • wolframium
  • tungsten(4+) ion
  • Tungsten metal
  • tungsten atom
  • tungsten(6+)
  • Tungsten, elemental
  • Tungsten powder
  • Tungsten wire
  • tungsten(4+)
  • tungsten(5+)
  • 7440-33-7(powder)
  • tungsteno
  • Single Layer MoS2 quantum dots powder
  • tungsten(5+) ion
  • Tungsten ion(W6 )
  • Tungsten, ion(W4 )
  • Tungsten, ion(W6 )
  • Tungsten Standard: W @ 1000 microg/mL in H2O
  • Tungsten Standard: W @ 10000 microg/mL in H2O
  • Tungsten, ion (W6+)
  • tungstene
  • volframio
Show all 38 synonyms
  • wolframio
  • Tungsten Standard: W @ 1000 microg/g in Hydrocarbon Oil
  • Tungsten Standard: W @ 5000 microg/g in Hydrocarbon Oil
  • Tunsten
  • Tungsten Standard: W @ 1000 microg/mL in 5% HNO3, tr. HF
  • Tungsten Standard: W @ 10000 microg/mL in 5% HNO3, tr. HF
  • Atomic Tungsten
  • Tungsten element
  • Tungsten hydride
  • Element Tungsten
  • Element:Tungsten
  • Tungsten solution
  • Element-W

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

Appearance
Steel-gray to tin-white metal, body centered cubic structureexp.
Melting point
3,410 °Cexp.
Boiling point
5,900 °Cexp.
Density
19.3 g/cm³exp.
Autoignition temperature
≥100exp.
Solubility
Solubility in water: noneexp.
Vapour pressure
1.97 × 10⁻⁷ mm Hg @ 2,327 °Cexp.

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
183.84 g/molcalc.
Exact mass
183.9509 Dacalc.
LogP (octanol/water)
0calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable

Hazard statements

  • H228Flammable solid.
  • H252Self-heating in large quantities, may catch fire.
Precautionary statements (10)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P235Keep cool.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P407Maintain air gap between stacks or pallets.
  • P410Protect from sunlight.
  • P413Store bulk masses at temperatures not exceeding the specified limit.
  • P420Store separately.
UN number
UN 3089
Transport hazard class
4.1
Packing group
III

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

Tungsten suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 103 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

103 suppliers in 18 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Tungsten price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Incr hardness, toughness, elasticity and tensile strength of steel, mfr alloys, filaments for incandescent lamps and in electron tubes, in contact points for automotive, telegraph, radio and television apparatus, phonograph needles.

In glass-to-metal seals, metal evap work, x-ray targets, windings and heating elements, high-temp uses.

High-speed tool steel, ferrous, and nonferrous alloys, ferrotungsten, filaments for electric lightbulbs, contact points, X-ray and electron tubes, welding electrodes, heating elements in furnaces and vacuum-metalizing equipment, rocket nozzles and other aerospace applications, shell steel, chemical apparatuses, high-speed rotors as in gyroscopes, solar energy devices (as vapor-deposited film that retains heat at 500 °C).

In plating material, prepn of green & blue pigments.

Industrial uses: Intermediate, Other, Alloys, Conductive agent.

Consumer uses: Conductive agent, Alloys, Other.

Use classes: Inorganic substances.

Roles

  • food component
  • micronutrient
  • nutrient
  • physiological role

How it is made

Obtained commercially by redn tungsten oxide with hydrogen or carbon.

Metal...plated onto objects by vapor deposition from tungsten hexafluoride or hexacarbonyl and can bond metal parts together. ...powder (produced by carbon redn) converted into solid metal by powd metallurgical techniques. Large single crystals...grown by arc-fusion process. Granules...by redn of hexafluoride.

Aluminothermic reduction of tungstic oxide, hydrogen reduction of tungstic acid or its anhydride

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 Tungsten is traded under.

HS 8101.10Indicative HS code

Articles thereof, including waste and scrap, powders

Our trade statistics cover HS chapters 25 to 40 (minerals, chemicals, plastics and rubber). This code is in chapter 81, metals, which is not included yet.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Tungsten is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Tungsten, based on the data on this page

What is Tungsten?

Tungsten is a chromium group element atom. It has a role as a micronutrient.

What is the CAS number of Tungsten?

The CAS registry number of Tungsten is 7440-33-7.

What is the molecular formula and weight of Tungsten?

The molecular formula of Tungsten is W and its molar mass is 183.84 g/mol.

What is Tungsten used for?

Incr hardness, toughness, elasticity and tensile strength of steel, mfr alloys, filaments for incandescent lamps and in electron tubes, in contact points for automotive, telegraph, radio and television apparatus, phonograph needles.

Is Tungsten hazardous?

Tungsten carries the GHS signal word "Danger". Main hazards: flammable solid, self-heating in large quantities, may catch fire. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tungsten?

Tungsten is usually classified under HS code 810110 (Powders). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tungsten?

CompoundList lists 103 suppliers of Tungsten in United States, China, India, Germany and 14 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Tungsten in India?

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

What is the price of Tungsten?

Suppliers quote Tungsten 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 Tungsten

Get quotes for Tungsten

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Tungsten
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Tungsten with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/tungsten-7440-33-7" title="Tungsten structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Metals, alloys and elements or HS code 810110

103 suppliers
Free quotes, contact stays private
Get quotes