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Sulfates and sulfur salts

Copper sulfide (CuS)

Also known as Copper(2+) sulfide, Copper Blue, Monocopper monosulfide

CAS 1317-40-4Formula CuSMolar mass 95.61 g/molEC 215-271-2
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Copper sulfide (CuS) chemical structure, CuS, CAS 1317-40-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Black powder or lumps
Boiling point
200 °C
Density
4.76
Solubility
0.000033 G/100 CC WATER @ 18 °C.
HS code
283090
Category
Sulfates and sulfur salts
Illustrative photo, fine black powder in a glass jar on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Copper sulfide (CuS)?

Plain description, key identifiers and synonyms

Copper(II) sulfide is a copper sulfide in which the metal is in the +2 oxidation state.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
copper sulfide
CAS number
1317-40-4 CAS number cross-checkedOther or deprecated CAS: 11115-78-9, 12054-07-8
EC number
215-271-2
Molecular formula
CuS
UNII
KL4YU612X7
INCI name
CUPRIC SULFIDE
InChIKey
OMZSGWSJDCOLKM-UHFFFAOYSA-N
InChI
InChI=1S/Cu.S/q+2;-2
SMILES (canonical and isomeric)
[S-2].[Cu+2]

Synonyms

  • Copper(2+) sulfide
  • Copper Blue
  • Monocopper monosulfide
  • CI 77450
  • cpd with unspecified MF of cupric sulfide
  • C.I. 77450
  • Copper(II) sulfide
  • Cupric sulfide
  • Horace Vernet's Blue
  • Natural covellite
  • sulfanylidenecopper
  • Copper sulfide (CuS2)
  • copper, sulfide
  • Kupfer(II)-sulfid
  • Ultra Dry Copper Sulfide
  • copper monosulfide (covelline)
  • Copper(II) sulphide, -200 mesh
  • Copper(II) sulfide, copper sulphide, thioxocopper
  • CuS|copper sulphide|cupric sulfide|kupfer(II)-sulfid|copper(2+) sulfide|monocopper monosulfide

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 powder or lumpsexp.
Boiling point
200 °Cexp.
Density
4.76exp.
Solubility
0.000033 G/100 CC WATER @ 18 °C.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
95.61 g/molcalc.
Exact mass
94.9017 Dacalc.
LogP (octanol/water)
0calc.
Topological polar surface area
0 Ųcalc.
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

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Copper sulfide (CuS) suppliers

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

All 8 suppliers
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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

8 suppliers in 1 country

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Copper sulfide (CuS) 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

In antifouling paints, in prepn of mixed catalysts, in development of aniline black dye in textile printing.

Pigment for linseed oil varnishes.

Oxidizing agent, eg, in lithium batteries.

Component of solid state electrodes.

Industrial uses: Other, Catalyst, Adsorbent, Intermediate.

Industries and functions

Cosmetic ingredient, INCI name CUPRIC SULFIDE(not reported)

Cosmetic functions

  • Not reported

How it is made

Prepn: Glemser, Sauer in Handbook of Preparative Inorganic Chemistry, vol 2, G Brauer, ed (Academic Press, New York, 2nd ed, p 1017 (1965).

By passing hydrogen sulfide gas into a soln of a copper salt.

Reaction of copper with molten sulfur followed by boiling in sodium hydroxide, reaction of sodium sulfide with aqueous copper sulfate.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

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 sulfide (CuS) is traded under.

HS 2830.90Indicative HS code

Sulphides, polysulphides, whether or not chemically defined, other

World exports in 2024
$382M
+2.0% vs 2023, imports $246M
2019 to 2024
Top exporters
  1. Austria33.1%
  2. Philippines31.4%
  3. Germany9.1%
Top importers
  1. Germany12.7%
  2. South Korea11.7%
  3. China10.7%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Copper sulfide (CuS), based on the data on this page

What is Copper sulfide (CuS)?

Copper(II) sulfide is a copper sulfide in which the metal is in the +2 oxidation state.

What is the CAS number of Copper sulfide (CuS)?

The CAS registry number of Copper sulfide (CuS) is 1317-40-4. Other or deprecated CAS numbers: 11115-78-9, 12054-07-8.

What is the molecular formula and weight of Copper sulfide (CuS)?

The molecular formula of Copper sulfide (CuS) is CuS and its molar mass is 95.61 g/mol.

What is Copper sulfide (CuS) used for?

In antifouling paints, in prepn of mixed catalysts, in development of aniline black dye in textile printing. Pigment for linseed oil varnishes. Oxidizing agent, eg, in lithium batteries. Component of solid state electrodes. Industrial uses: Other, Catalyst, Adsorbent, Intermediate.

Is Copper sulfide (CuS) hazardous?

No GHS hazard classification for Copper sulfide (CuS) is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Copper sulfide (CuS)?

Copper sulfide (CuS) is usually classified under HS code 283090 (Sulphides, polysulphides, whether or not chemically defined, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Copper sulfide (CuS)?

CompoundList lists 8 suppliers of Copper sulfide (CuS) in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Copper sulfide (CuS)?

Suppliers quote Copper sulfide (CuS) 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 sulfide (CuS)

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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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