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Silicates, borates and other salts

Copper cyanide

Also known as Cupricin, Copper(+1) cyanide, RCRA waste no. P029

CAS 544-92-3Formula CCuNMolar mass 89.56 g/molEC 208-883-6
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Hazardous to the environment 42 suppliers listed
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Copper cyanide chemical structure, CCuN, CAS 544-92-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White monoclinic prisms or green orthorhombic crystals
Melting point
474 °C
Boiling point
Decomposes
Density
2.9
Solubility
Practically insol in water, alcohol, cold dil acids, sol in ammonium hydroxide, sol in a…
HS code
283720
Category
Silicates, borates and other salts
UN number
UN 1587
Illustrative photo, colourless crystals in an open fibre drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Copper cyanide?

Plain description, key identifiers and synonyms

Copper cyanide appears as a green powder. Insoluble in water. Toxic by skin absorption, through open wounds, by ingestion, and by inhalation of hydrogen cyanide that arises from slight decomposition. Produces toxic oxides of nitrogen in fires.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
copper(1+) cyanide
CAS number
544-92-3 CAS number cross-checked
EC number
208-883-6
Molecular formula
CCuN
UNII
534K22856J
InChIKey
DOBRDRYODQBAMW-UHFFFAOYSA-N
InChI
InChI=1S/CN.Cu/c1-2;/q-1;+1
SMILES (canonical and isomeric)
[C-]#N.[Cu+]

Synonyms

  • Cupricin
  • Copper(+1) cyanide
  • RCRA waste no. P029
  • Copper cyanide (ous)
  • Copper(1+) cyanide
  • Cuprous cyanide
  • Copper(I) cyanide
  • cyanocopper
  • RCRA waste number P029
  • Copper cyanide (Cu(CN))
  • copper(1+), cyanide
  • CuCN
  • copper(I)cyanide
  • cyano copper
  • cu(ii) cyanide
  • copper(1)cyanide
  • copper (I)cyanide
  • copper(I)-cyanide
  • Copper Cyanide, Copper Monocyanide, Copper(1+) Cyanide, Copper(I) Cyanide, Cupricin, Cuprous Cyanide
  • Copper(1) cyanide
  • copper-(I) cyanide
  • copper-(I)-cyanide
  • copper (1) cyanide
  • Copper(I) cyanide, 99%
  • Copper(I) cyanide, 99.98%
Show all 27 synonyms
  • Copper(I) cyanide, purum p.a., >=99.0% (KT)
  • Copper (I) cyanide (dustless), wetted with 7% water

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
White monoclinic prisms or green orthorhombic crystalsexp.
Melting point
474 °Cexp.
Boiling point
Decomposesexp.
Density
2.9exp.
Solubility
Practically insol in water, alcohol, cold dil acids, sol in ammonium hydroxide, sol in alkali cyanide solutions because of formation of stable cyanocuprate(I) ionsexp.

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
89.56 g/molcalc.
Exact mass
88.9327 Dacalc.
LogP (octanol/water)
0.09calc.
Topological polar surface area
23.79 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
3calc.
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
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H300 + H310 + H330Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled.
  • H300Fatal if swallowed.
  • H310Fatal in contact with skin.
  • H330Fatal if inhaled.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (20)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1587
Transport hazard class
6.1
Packing group
II

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 cyanide suppliers

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

All 42 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

42 suppliers in 13 countries

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Copper cyanide 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

/former use/ As polymerization catalyst, in electroplating copper or iron, as insecticide, fungicide, as antifouling agent in marine paints.

/In/ ... strike baths, ... in plating baths, ... in silver plating, ... in brass plating, and ... in copper-tin alloy plating.

Electroplating, catalyst.

Copper-tin alloy plating process reagent, reagent (Sangmeyer reactions), brass/copper plating reagent.

Industrial uses: Plating agent, Catalyst.

How it is made

Obtained by adding potassium cyanide to a copper sulfate solution.

Prepared by leaching copper scrap with ammonium carbonate solution and precipitating by the addition of sodium cyanide pellets.

Copper sulfate + sodium cyanide (precipitation)

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 Copper cyanide is traded under.

HS 2837.20Indicative HS code

Complex cyanides

World exports in 2024
$55.8M
+34.3% vs 2023, imports $58.1M
2019 to 2024
Top exporters
  1. China27.8%
  2. Switzerland * partner reported24.0%
  3. Canada19.8%
Top importers
  1. United States26.1%
  2. China13.2%
  3. Singapore12.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Copper cyanide?

Copper cyanide appears as a green powder. Insoluble in water. Toxic by skin absorption, through open wounds, by ingestion, and by inhalation of hydrogen cyanide that arises from slight decomposition. Produces toxic oxides of nitrogen in fires.

What is the CAS number of Copper cyanide?

The CAS registry number of Copper cyanide is 544-92-3.

What is the molecular formula and weight of Copper cyanide?

The molecular formula of Copper cyanide is CCuN and its molar mass is 89.56 g/mol.

What is Copper cyanide used for?

/former use/ As polymerization catalyst, in electroplating copper or iron, as insecticide, fungicide, as antifouling agent in marine paints. /In/ ... strike baths, ... in plating baths, ... in silver plating, ... in brass plating, and ... in copper-tin alloy plating. Electroplating, catalyst.

Is Copper cyanide hazardous?

Copper cyanide carries the GHS signal word "Danger". Main hazards: fatal if swallowed. fatal in contact with skin. fatal if inhaled, fatal if swallowed, fatal in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Copper cyanide?

Copper cyanide is usually classified under HS code 283720 (Complex cyanides). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Copper cyanide?

CompoundList lists 42 suppliers of Copper cyanide in India, United States, China, United Kingdom and 9 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 cyanide in India?

12 suppliers in India list Copper cyanide 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 cyanide?

Suppliers quote Copper cyanide 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 cyanide

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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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