CompoundList
Sign in
Oxides and peroxides

Copper oxide (CuO)

Also known as Copper(2+) oxide, Cuprum oxydatum nigrum, Copper Oxide 0.4

CAS 1317-38-0Formula CuOMolar mass 79.55 g/molEC 215-269-1
GHS signal word: Warning. Pictograms: Hazardous to the environment 96 suppliers listed Drug substance
Get quotes Compare 96 suppliers
Copper oxide (CuO) chemical structure, CuO, CAS 1317-38-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Black to brownish-black amorphous or crystalline powder or granules
Melting point
1,326 ยฐC
Boiling point
1,026 ยฐC
Density
6.315 @ 14 ยฐC/4 ยฐC
Solubility
Practically insol in water, alc, sol in dilute acids, alkali cyanides, ammonium carbonatโ€ฆ
HS code
282550
Category
Oxides and peroxides
Illustrative photo, black powder in an open woven sack in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Copper oxide (CuO)?

Plain description, key identifiers and synonyms

Copper(II) oxide is a metal oxide that has the formula CuO. It has an ionic structure. It contains a copper(2+).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
copper oxygen(2-)
CAS number
1317-38-0 CAS number cross-checkedOther or deprecated CAS: 1344-70-3
EC numbers
215-269-1, 215-706-6
Molecular formula
CuO
UNII
V1XJQ704R4
INCI name
CUPRIC OXIDE
InChIKey
KKCXRELNMOYFLS-UHFFFAOYSA-N
InChI
InChI=1S/Cu.O/q+2;-2
SMILES (canonical and isomeric)
[O-2].[Cu+2]

Synonyms

  • Copper(2+) oxide
  • Cuprum oxydatum nigrum
  • Copper Oxide 0.4
  • Cuprite 3 Special Order
  • Banacobru ol
  • Black copper oxide
  • Boliden Salt K-33
  • Boliden-CCA Wood Preservative
  • C.I. 77403
  • CCA Type C Wood Preservative
  • Chrome Brown
  • CI 77403
  • Copacaps
  • Copper Brown
  • Copper monooxide
  • Copper monoxide
  • Copper(II) oxide
  • Copporal
  • Cupric Oxide
  • Farboil Super Tropical Anti-Fouling 1260
  • Natural tenorite
  • Osmose K-33 Wood Preservative
  • Osmose K-33-A Wood Preservative
  • Osmose K-33-C Wood Preservative
  • Osmose P-50 Wood Preservative
Show all 34 synonyms
  • oxocopper
  • Cu(II) oxide
  • copper, oxygen(2-)
  • Copper(II) oxide 325 mesh powder
  • copper oxid
  • CB 250
  • Copper(II)oxideonalumina
  • Copper(II) oxide on alumina
  • copper(II) oxide (tenorite)

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
Black to brownish-black amorphous or crystalline powder or granulesexp.
Melting point
1,326 ยฐCexp.
Boiling point
1,026 ยฐCexp.
Density
6.315 @ 14 ยฐC/4 ยฐCexp.
Solubility
Practically insol in water, alc, sol in dilute acids, alkali cyanides, ammonium carbonate soln, slowly sol in ammoniaexp.
Vapour pressure
0 mmHg (approx)exp.

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
79.55 g/molcalc.
Exact mass
78.9245 Dacalc.
LogP (octanol/water)
-0.12calc.
Topological polar surface area
28.5 ร…ยฒcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

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.

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 oxide (CuO) suppliers

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

All 96 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

96 suppliers in 19 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

Copper oxide (CuO) 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

As pigment in glass, ceramics, enamels, porcelain glazes, artificial gems, in mfr of rayon, other copper cmpd, in sweetening petroleum gases, in galvanic electrodes, as flux in copper metallurgy, as optical glass polishing agent, welding fluxes for bronze, to impart flux and abrasion resistance to glass fibers, in antifouling paints, pyrotechnic compositions, as exciter in phosphor mixtures, as catalyst for org reactions.

Cloud seeding, used as a heat collecting surface in solar energy devices, reduces tar in tobacco smoke, used as a catalyst in ammonia manufacture, and for the oxidation of exhaust gases from internal combustion engines.

Wood preservation, feed additive, pigment, catalyst.

Industrial uses: Plating agent, Alloys, Other, Flavoring and nutrient, Adsorbent, Oxidizing agent, Intermediate, Pigment.

Consumer uses: Film former, Soil amendments (fertilizers), Catalyst, Adsorbent, Pigment, Intermediate, Other, Alloys.

Cosmetic ingredient, INCI name CUPRIC OXIDE(antimicrobial)

Pharmacological actions

  • Trace Elements

Functional uses

  • Biocide
  • Filler

Cosmetic functions

  • Antimicrobial

How it is made

Prep: Glemser, Sauer in Handbook of Preparative Inorganic Chemistry vol 2 G Bauer Ed (Academic Press NY 2nd ed 1965) p 1012.

Ignition of copper carbonate or copper nitrate

It can be prepared by oxidation of copper turnings at 800 ยฐc in air or oxygen ...

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 029-016-00-6

Health and food

  • EU cosmetic ingredient inventory
  • 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 oxide (CuO) is traded under.

HS 2825.50Indicative HS code

Copper oxides and hydroxides

World exports in 2024
$547M
+23.8% vs 2023, imports $567M
2019 to 2024
Top exporters
  1. United States34.1%
  2. Norway * partner reported21.5%
  3. Australia9.7%
Top importers
  1. China16.0%
  2. South Korea9.4%
  3. United Kingdom6.4%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Copper oxide (CuO), based on the data on this page

What is Copper oxide (CuO)?

Copper(II) oxide is a metal oxide that has the formula CuO. It has an ionic structure. It contains a copper(2+).

What is the CAS number of Copper oxide (CuO)?

The CAS registry number of Copper oxide (CuO) is 1317-38-0. Other or deprecated CAS numbers: 1344-70-3.

What is the molecular formula and weight of Copper oxide (CuO)?

The molecular formula of Copper oxide (CuO) is CuO and its molar mass is 79.55 g/mol.

What is Copper oxide (CuO) used for?

As pigment in glass, ceramics, enamels, porcelain glazes, artificial gems, in mfr of rayon, other copper cmpd, in sweetening petroleum gases, in galvanic electrodes, as flux in copper metallurgy, as optical glass polishing agent, welding fluxes for bronze, to impart flux and abrasion resistance to glass fibers, in antโ€ฆ

Is Copper oxide (CuO) hazardous?

Copper oxide (CuO) 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 oxide (CuO)?

Copper oxide (CuO) is usually classified under HS code 282550 (Copper oxides and hydroxides). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Copper oxide (CuO)?

CompoundList lists 96 suppliers of Copper oxide (CuO) in United States, China, India, Canada and 15 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 oxide (CuO) in India?

9 suppliers in India list Copper oxide (CuO) 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 oxide (CuO)?

Suppliers quote Copper oxide (CuO) 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 oxide (CuO)

Get quotes for Copper oxide (CuO)

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Copper oxide (CuO)
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 oxide (CuO) 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-oxide-cuo-1317-38-0" title="Copper oxide (CuO) 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 Oxides and peroxides or HS code 282550

96 suppliers
Free quotes, contact stays private
Get quotes