CompoundList
Element with atomic number and standard atomic weight

Key facts

What buyers check first

Appearance
Reddish, lustrous, ductile, malleable metal
Melting point
1,083 °C
Boiling point
2,595 °C
Density
Relative density (water = 1): 8.9
Solubility
Slowly soluble in ammonia water
HS code
740311
Category
Metals, alloys and elements
UN number
UN 2776

What is Copper?

Plain description, key identifiers and synonyms

Copper atom is a copper group element atom and a metal allergen. It has a role as a micronutrient and an Escherichia coli metabolite.

Copper is a chemical element with symbol Cu and atomic number 29.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
copper
CAS number
7440-50-8 CAS number cross-checked
EC number
231-159-6
Molecular formula
Cu
UNII
789U1901C5
MDL number
MFCD00010965, MFCD00239961
INCI name
CI 77400, COPPER, COPPER POWDER
InChIKey
RYGMFSIKBFXOCR-UHFFFAOYSA-N
InChI
InChI=1S/Cu
SMILES (canonical and isomeric)
[Cu]

Synonyms

  • Copper powder
  • cuprum
  • Copper bronze
  • Bronze powder
  • Copper, elemental
  • Tatum-T
  • Arwood copper
  • Copper-airborne
  • Copper-milled
  • Kafar copper
  • Paragard T 380a
  • Raney copper
  • Gold bronze
  • Allbri Natural Copper
  • Cuprum metallicum
  • Copper slag-milled
  • Copper slag-airborne
  • cuivre
  • Copper M 1
  • CU
  • Kupfer
  • OFHC Cu
  • M1 (Copper)
  • M2 (Copper)
  • M3 (Copper)
Show all 38 synonyms
  • M4 (Copper)
  • CU M3
  • Copper, metallic powder
  • E 115 (metal)
  • 1721 Gold
  • ANAC 110
  • CDA 101
  • CDA 102
  • CDA 110
  • CDA 122
  • CI 77400
  • C.I. 77400
  • CE 1110

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
Reddish, lustrous, ductile, malleable metalexp.
Odour
Odorless /Copper dusts and mists/exp.
Melting point
1,083 °Cexp.
Boiling point
2,595 °Cexp.
Density
Relative density (water = 1): 8.9exp.
Solubility
Slowly soluble in ammonia waterexp.
Vapour pressure
1 mm Hg @ 1628 °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
63.55 g/molcalc.
Exact mass
62.9296 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
Warning
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2776
Transport hazard class
3
Packing group
I

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

Copper suppliers

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

All 136 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

136 suppliers in 14 countries

Send one request to many suppliers

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

Copper 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

Electrical wiring, switches, plumbing, heating, roofing and building construction, chemical and pharmaceutical machinery, alloys (brass, bronze, Monel metal, beryllium-copper), electroplated protective coatings and undercoats for nickel, chromium, zinc, etc., cooking utensils, corrosion-resistant piping, insecticides, catalysts, antifouling paints. Flakes used as insulation for liquid fuels.

Read more

Whiskers used in thermal and electrical composites.

In works of art, manufacture of bronzes, brass, other copper alloys, electrical conductors, ammunition, copper salts.

In a statistical analyses of the copper, brass and bronze industry, there are five primary markets: (1) building construction (41%), including building wiring, plumbing, and heating, air conditioning (qv) and commercial refrigeration, builders' hardware, and architectural materials, (2) electrical and electronic products (23%), for example power utilities, telecommunications, business electronics and lighting and wiring devices, (3) industrial machinery and equipment, (14%) such as in-plant equipment, industrial valves and fittings, nonelectrical instruments, off-highway vehicles, and heat exchangers, (4) transportation equipment (12%), including automobiles, trucks and buses, railroads, marine vehicles, aircraft, and aerospace vehicles, and consumer and general products (10%), such as appliances, cord sets, ordnance, consumer electronics, fasteners, coinage, utensils and cutlery, and miscellaneous items.

Substance listed with specific concentration in tattoo ink and/or permanent make up according to EU Commission Regulation 2020/2081. The concentration limit (by weight) is 0.025%.

Cosmetic ingredient, INCI name COPPER POWDER(antimicrobial, bulking, colorant)

Pharmacological actions

  • Trace Elements

Roles

  • Escherichia coli metabolite
  • bacterial metabolite
  • food component
  • metabolite
  • micronutrient
  • nutrient
  • physiological role
  • prokaryotic metabolite

Functional uses

  • Alloying element
  • Biocide
  • Conductive agent
  • Corrosion inhibitor
  • Dye
  • Pigment
  • Plating agent
  • Solvent

Cosmetic functions

  • Antimicrobial
  • Astringent
  • Bulking
  • Colorant
  • Hair conditioning
  • Skin conditioning - humectant
  • Skin protecting

Pharmacology

Copper is an element with atomic symbol Cu, atomic number 29, and atomic weight 63.

How it is made

Crush, grind, and concentrate copper ores by flotation (sulfide ores) or leaching with acid (oxide ores), smelt concentrates to yield a blister copper which is refined electrolytically or fire refined

About 80% of the primary copper in the world comes from low-grade or poor sulfide ores, which are usually treated by pyrometallurgical methods, generally in the following sequence: (1) Beneficiation by froth flotation of ore to copper concentrate, (2) Optional partial roasting to obtain oxidized material or calcines, (3) two-stage pyrometallurgical extraction, (a) smelting concentrates to matte,

Read more

(b) converting matte by oxidation to crude (converter or blister) copper, (4) Refining the crude copper, usually in two steps, (a) pyrometallurgically to fire-refined copper, (b) electrolytically to high-purity electrolytic copper.

Most copper is processed using a combination of mining, concentrating, smelting, and refining, or by leaching waste and solvent extraction-electrowinning...

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 029-026-00-0

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Copper (nano) [INCI] Colloidal Copper (nano) [INCI], Ref no: 1726, Annex ref: II/1726
  • EU Cosmetics Regulation Annex IV, allowed colourant
    Name: CI 77400, Ref no: 132, Annex ref: IV/132
  • Active ingredient in FDA approved drug labels

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 Copper is traded under.

HS 7403.11Indicative HS code

Cathodes and sections of cathodes

Our trade statistics cover HS chapters 25 to 40 (minerals, chemicals, plastics and rubber). This code is in chapter 74, copper and articles thereof, which is not included yet.

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

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

Frequently asked questions

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

What is Copper?

Copper atom is a copper group element atom and a metal allergen. It has a role as a micronutrient and an Escherichia coli metabolite.

What is the CAS number of Copper?

The CAS registry number of Copper is 7440-50-8.

What is the molecular formula and weight of Copper?

The molecular formula of Copper is Cu and its molar mass is 63.55 g/mol.

What is Copper used for?

Electrical wiring, switches, plumbing, heating, roofing and building construction, chemical and pharmaceutical machinery, alloys (brass, bronze, Monel metal, beryllium-copper), electroplated protective coatings and undercoats for nickel, chromium, zinc, etc., cooking utensils, corrosion-resistant piping, insecticides,…

Is Copper hazardous?

Copper carries the GHS signal word "Warning". Main hazards: very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Copper?

Copper is usually classified under HS code 740311 (Cathodes and sections of cathodes). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Copper?

CompoundList lists 136 suppliers of Copper in United States, China, India, Germany and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Copper in India?

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

What is the price of Copper?

Suppliers quote Copper 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 Copper

Get quotes for Copper

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
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 Copper 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/copper-7440-50-8" title="Copper 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 740311

136 suppliers
Free quotes, contact stays private
Get quotes