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Metals, alloys and elements

Rhenium

Also known as RE, Rhenium, elemental, rhenium atom

CAS 7440-15-5Formula ReMolar mass 186.21 g/molEC 231-124-5
GHS signal word: Danger. Pictograms: Flammable 59 suppliers listed
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
CAS number
7440-15-5
Formula
Re
Molar mass
186.21 g/mol
Physical form
Solid
HS code
811241
Category
Metals, alloys and elements
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Rhenium?

Plain description, key identifiers and synonyms

Rhenium atom is a manganese group element atom.

Rhenium is a chemical element with symbol Re and atomic number 75.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
rhenium
CAS number
7440-15-5 CAS number cross-checked
EC number
231-124-5
Molecular formula
Re
UNII
7YHU292INY
MDL number
MFCD00011195
InChIKey
WUAPFZMCVAUBPE-UHFFFAOYSA-N
InChI
InChI=1S/Re
SMILES (canonical and isomeric)
[Re]

Synonyms

  • RE
  • Rhenium, elemental
  • rhenium atom
  • Rhenium pellets
  • Rhenium element
  • renio
  • 75Re
  • rhenium metal
  • Rhenium, elementar
  • Rhenium wire
  • Rhenium ion(Re7 )
  • Rhenium, ion(Re7 )
  • Rhenium Standard: Re @ 1000 microg/mL in 5% HNO3
  • Rhenium Standard: Re @ 10000 microg/mL in 5% HNO3
  • Rhenium hydride
  • Rhenium powder
  • Atomic Rhenium
  • Element Rhenium
  • Element:Rhenium
  • Rhenium foil
  • Rhenium rod
  • Element-Re
  • Element:Re
  • Rhenium Nanofoil
  • Rhenium Nanorods
Show all 37 synonyms
  • rhenium-on-carbon
  • Rhenium (atomic)
  • Rhenium Nanoprisms
  • Re (element)
  • Rhenium (element)
  • rhenium pentahydride
  • rhenium|rhenium atom
  • rhenium(iii) hydride
  • Rhenium Metal Powder
  • Rhenium powder, -325 mesh
  • 7440-15-5(powder)
  • Rhenium slug, 12.7mm (0.5in) dia

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
Solidexp.

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
186.21 g/molcalc.
Exact mass
186.9558 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.
Precautionary statements (5)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • 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.

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

Rhenium suppliers

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

All 59 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

59 suppliers in 15 countries

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Rhenium 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.

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Alloys.

Consumer uses: Alloys.

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 Rhenium is traded under.

HS 8112.41Indicative HS code

Unwrought, powders, waste and scrap

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 Rhenium is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Rhenium?

Rhenium atom is a manganese group element atom.

What is the CAS number of Rhenium?

The CAS registry number of Rhenium is 7440-15-5.

What is the molecular formula and weight of Rhenium?

The molecular formula of Rhenium is Re and its molar mass is 186.21 g/mol.

What is Rhenium used for?

Industrial uses: Alloys. Consumer uses: Alloys.

Is Rhenium hazardous?

Rhenium carries the GHS signal word "Danger". Main hazards: flammable solid. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Rhenium?

Rhenium is usually classified under HS code 811241 (Unwrought, waste and scrap, powders). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Rhenium?

CompoundList lists 59 suppliers of Rhenium in United States, China, Germany, Spain and 11 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Rhenium in India?

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

What is the price of Rhenium?

Suppliers quote Rhenium 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 Rhenium

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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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