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Fertilizers and micronutrients

Dicyandiamide

Also known as Cyanoguanidine, Dicyanodiamide, N-Cyanoguanidine

CAS 461-58-5Formula C2H4N4Molar mass 84.08 g/molEC 207-312-8
GHS signal word: Warning. Pictograms: Harmful or irritant 151 suppliers listed
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Dicyandiamide chemical structure, C2H4N4, CAS 461-58-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Monoclinic prismatic crystals from water or alcohol
Melting point
209.5 °C
Density
1.4 g/cm³
Solubility
Solubility in water, g/100ml at 25 °C: 4.13
HS code
292620
Category
Fertilizers and micronutrients
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dicyandiamide?

Plain description, key identifiers and synonyms

Cyanoguanidine is a guanidine in which one of the amino hydrogens of guanidine itself is substituted by a cyano group. It is used in the manufacture of fertilizers, pharmaceuticals, explosives, oil well drilling muds, and dyestuffs. It has a role as a nitrification inhibitor, a fertilizer, an explosive, a curing agent and a flame retardant. It is a nitrile and a member of guanidines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-cyanoguanidine
CAS number
461-58-5 CAS number cross-checkedOther or deprecated CAS: 157480-33-6, 26591-10-6
EC numbers
207-312-8, 611-249-5
Molecular formula
C2H4N4
UNII
M9B1R0C16H
MDL number
MFCD00008066
InChIKey
QGBSISYHAICWAH-UHFFFAOYSA-N
InChI
InChI=1S/C2H4N4/c3-1-6-2(4)5/h(H4,4,5,6)
SMILES (canonical and isomeric)
C(#N)N=C(N)N

Synonyms

  • Cyanoguanidine
  • Dicyanodiamide
  • N-Cyanoguanidine
  • 1-Cyanoguanidine
  • Pyroset DO
  • Dicyandiamido
  • Dicyandiamin
  • Epicure DICY 7
  • Epicure DICY 15
  • Araldite HT 986
  • Bakelite VE 2560
  • Araldite XB 2879B
  • Araldite XB 2979B
  • ACR-H 3636
  • XB 2879B
  • 2-Cyanoguanidine
  • Guanidine, cyano-
  • Metformin EP Impurity A
  • 3-cyanoguanidine
  • Guanidine-1-carbonitrile
  • Guanidine, N-cyano-
  • aminocyanocarboxamidine
  • DCD
  • Cyanoguanidine Metformin Related Compound A USP
  • Dicyanadiamide
Show all 35 synonyms
  • Dicyanediamide
  • cyano-guanidine
  • 1-cyano-guanidine
  • Cyanamide metabolite
  • Dicyandiamide, 99%
  • Dyhard 100S
  • Adeka EH 3636AS
  • Dicyanodiamide M.P. RS
  • Adeka EH 3636
  • Metformin impurity A CRS

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
Monoclinic prismatic crystals from water or alcoholexp.
Odour
Odorlessexp.
Melting point
209.5 °Cexp.
Density
1.4 g/cm³exp.
Solubility
Solubility in water, g/100ml at 25 °C: 4.13exp.
Vapour pressure
3 [mm Hg]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
84.08 g/molcalc.
Exact mass
84.0436 Dacalc.
LogP (octanol/water)
-1.26calc.
Topological polar surface area
88.19 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
Precautionary statements (13)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

Dicyandiamide suppliers

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

All 151 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

151 suppliers in 25 countries

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Dicyandiamide 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.

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Uses and applications

What the substance is used for, by industry and function

In plastics industry (manufacture of melamine), in pharmaceutical industry (barbiturates, guanidine deriv).

Heat-cured epoxy resin curing agent, flotation depressant (copper ores), intumescent paint ingredient, electrostatic powder coating ingredient, plasticiser (starch adhesives).

Used as a chemical intermediate for the synthesis of acetoguanamine, benzoguanamine, cyanamide-formaldehyde resins, cyclobarbital, Fluorescent Brightener 179, guanidine nitrate, guanylurea sulfate, heptabarbital, hexobarbital, melamine, metformin, moroxydine, pentobarbital, poly(hexamethylenebiguanide) hydrochloride, o-tolylbiguanide.

In fertilizers, nitrocellulose stabilizer, org synthesis...

Read more

Dye-stuffs, explosives, retarding rancidity in fats and oils, fire-proofing cmpd, case-hardening prepn, cleaning (and)...soldering cmpd, accelerator, thinner for oil-well drilling muds.

Stabilizer in detergent compositions, modifier for starch products, catalyst for epoxy resins.

Industrial uses: Polymerization promoter, Chemical reaction regulator, Monomers, Soil amendments (fertilizers), Fixing agent (mordant), Dye, Propellants, non-motive (blowing agents).

Consumer uses: Soil amendments (fertilizers), Intermediate, Hardener, Propellants, non-motive (blowing agents).

Use classes: Pesticide transformation products.

Roles

  • agrochemical
  • curing agent
  • explosive
  • fertilizer
  • flame retardant
  • nitrification inhibitor

Functional uses

  • Chemical reaction regulator
  • Hardener

How it is made

Prepared by controlled polymerization of cyanamide in water in presence of ammonia, alkaline earth hydroxides, or other suitable bases.

Cyanoguanidine is manufactured by dimerization of cyanamide in aqueous solution. The 25% cyanamide solution produced is adjusted to pH 8-9 and held at approximately 80 °C for two hours to give complete conversion. The hot liquor is filtered and transferred to a vacuum crystallizer where it is cooled. The crystals of cyanoguanidine are separated in continuous centrifuges and passed to rotary driers.

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 Dicyandiamide is traded under.

HS 2926.20Exact HS code

1-Cyanoguanidine (dicyandiamide)

World exports in 2024
$198M
−7.5% vs 2023, imports $198M
2019 to 2024
Top exporters
  1. China69.1%
  2. Germany26.5%
  3. United States1.1%
Top importers
  1. India * partner reported34.8%
  2. United States14.6%
  3. France * partner reported14.0%

* Partner reported figures, a lower bound.

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

The HS code shown for Dicyandiamide is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Dicyandiamide?

Cyanoguanidine is a guanidine in which one of the amino hydrogens of guanidine itself is substituted by a cyano group. It is used in the manufacture of fertilizers, pharmaceuticals, explosives, oil well drilling muds, and dyestuffs.

What is the CAS number of Dicyandiamide?

The CAS registry number of Dicyandiamide is 461-58-5. Other or deprecated CAS numbers: 157480-33-6, 26591-10-6.

What is the molecular formula and weight of Dicyandiamide?

The molecular formula of Dicyandiamide is C2H4N4 and its molar mass is 84.08 g/mol.

What is Dicyandiamide used for?

In plastics industry (manufacture of melamine), in pharmaceutical industry (barbiturates, guanidine deriv). Heat-cured epoxy resin curing agent, flotation depressant (copper ores), intumescent paint ingredient, electrostatic powder coating ingredient, plasticiser (starch adhesives).

Is Dicyandiamide hazardous?

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

What is the HS code of Dicyandiamide?

Dicyandiamide is usually classified under HS code 292620 (1-Cyanoguanidine (dicyandiamide)). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dicyandiamide?

CompoundList lists 151 suppliers of Dicyandiamide in China, United States, India, Turkey and 21 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dicyandiamide in India?

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

What is the price of Dicyandiamide?

Suppliers quote Dicyandiamide 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 Dicyandiamide

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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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