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Silicates, borates and other salts

Cyanide

Also known as Cyanide ion, Isocyanide, Cyanide anion

CAS 57-12-5Formula CN-Molar mass 26.02 g/mol
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Cyanide chemical structure, CN-, CAS 57-12-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
57-12-5
Formula
CN-
Molar mass
26.02 g/mol
HS code
283719
Category
Silicates, borates and other salts
UN number
UN 1935

What is Cyanide?

Plain description, key identifiers and synonyms

Cyanide is a pseudohalide anion that is the conjugate base of hydrogen cyanide. It has a role as an EC 1.9.3.1 (cytochrome c oxidase) inhibitor. It is a conjugate base of a hydrogen cyanide and a hydrogen isocyanide.

Cyanide is a negatively charged cyanide ion.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cyanide
CAS number
57-12-5 CAS number cross-checkedOther or deprecated CAS: 373-51-3
Molecular formula
CN-
UNII
OXN4E7L11K
MDL number
MFCD00468042
InChIKey
XFXPMWWXUTWYJX-UHFFFAOYSA-N
InChI
InChI=1S/CN/c1-2/q-1
SMILES (canonical and isomeric)
[C-]#N

Synonyms

  • Cyanide ion
  • Isocyanide
  • Cyanide anion
  • Nitrile anion
  • Cyanide ions
  • Cyanide(1-) ion
  • iminomethanide
  • Cyanide(1-)
  • Cyanure
  • Carbon nitride ion (CN1-)
  • Prussiate
  • Hydrocyanic acid, ion(1-)
  • methylidyneazanidyl
  • CN-
  • Cyanides
  • Cyanide (anion)
  • Cyanide (CN(sup 1-))
  • RCRA waste number P030
  • Hydrocyanic acid, ion(1-)-
  • Cyanide (CN-) @ 1000 mg/L in 0.1% NaOH
  • Carbon nitride ion (CN(sup 1-))
  • RCRA waste no. P030
  • isonitrile
  • Zyanid
  • Cyanide Standard
Show all 34 synonyms
  • nitridocarbonate(1-)
  • Cyanide with potassium salt
  • CN(-)
  • CN(-1)
  • Water Supply QC Check Sample: Cyanide
  • Water Pollution QC Check Sample: Cyanide
  • 17B - Total Phenol, Cyanide and Sulfate
  • Cyanide, Ion chromatography standard solution, Specpure, CN- 1000 microgram/ml
  • CN?

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
26.02 g/molcalc.
Exact mass
26.0036 Dacalc.
LogP (octanol/water)
0.1calc.
Topological polar surface area
23.79 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-1calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
UN number
UN 1935

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

Cyanide suppliers

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

All 5 suppliers
5 of 5 offers
  • Galber
    Mexico, GuadalajaraUnclaimed profile
    CyanideGrade, purity and minimum order on request
    Price on request
    View
  • Anhui Senrise Technology Co., Ltd.
    China, Pudong New AreaUnclaimed profile
    IsocyanideGrade, purity and minimum order on request
    Price on request
    View
  • 3WAY Pharm Inc
    China, ShanghaiUnclaimed profile
    CyanideGrade, purity and minimum order on request
    Price on request
    View
  • Ambinter
    France, OrleansUnclaimed profile
    CyanideGrade, purity and minimum order on request
    Price on request
    View
  • Clearsynth
    United States, San DiegoUnclaimed profile
    CyanideGrade, purity and minimum order on request
    Price on request
    View

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

5 suppliers in 4 countries

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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

The major uses of hydrogen cyanide are as an intermediate in the production of a number of chemicals and as an insecticide for fumigating enclosed spaces. Hydrogen cyanide has also been used in gas chamber executions.

Roles

  • electron-transport chain inhibitor
  • enzyme inhibitor
  • mitochondrial respiratory-chain inhibitor
  • pathway inhibitor
  • respiratory-chain inhibitor

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 Cyanide is traded under.

HS 2837.19Indicative HS code

Cyanides and cyanide oxides, other

World exports in 2024
$35M
+9.0% vs 2023, imports $73.2M
2019 to 2024
Top exporters
  1. South Korea62.4%
  2. Singapore11.7%
  3. Japan6.9%
Top importers
  1. Philippines29.3%
  2. China16.6%
  3. Malaysia14.7%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Cyanide?

Cyanide is a pseudohalide anion that is the conjugate base of hydrogen cyanide. It has a role as an EC 1.9.3.1 (cytochrome c oxidase) inhibitor. It is a conjugate base of a hydrogen cyanide and a hydrogen isocyanide.

What is the CAS number of Cyanide?

The CAS registry number of Cyanide is 57-12-5. Other or deprecated CAS numbers: 373-51-3.

What is the molecular formula and weight of Cyanide?

The molecular formula of Cyanide is CN- and its molar mass is 26.02 g/mol.

What is Cyanide used for?

The major uses of hydrogen cyanide are as an intermediate in the production of a number of chemicals and as an insecticide for fumigating enclosed spaces. Hydrogen cyanide has also been used in gas chamber executions.

Is Cyanide hazardous?

No GHS hazard classification for Cyanide 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 Cyanide?

Cyanide is usually classified under HS code 283719 (Cyanides and cyanide oxides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cyanide?

CompoundList lists 5 suppliers of Cyanide in China, France, Mexico and 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 Cyanide?

Suppliers quote 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 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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