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Fertilizers and micronutrients

Biuret

Also known as Carbamoylurea, Allophanamide, Imidodicarbonic diamide

CAS 108-19-0Formula C2H5N3O2Molar mass 103.08 g/molEC 203-559-0
GHS signal word: Warning. Pictograms: Harmful or irritant 31 suppliers listed
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Biuret chemical structure, C2H5N3O2, CAS 108-19-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Elongated plates from ethanol
Melting point
190 °C
Density
1.467 @ -5 °C/4 °C
Solubility
SOL IN 100 G WATER: 2.01 G @ 25 °C, 7 G @ 50 °C, 20 G @ 75 °C, 53.5 G @ 105.5 °C, FREELY…
HS code
292519
Category
Fertilizers and micronutrients
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Biuret?

Plain description, key identifiers and synonyms

Biuret is a member of the class of condensed ureas that is the compound formed by the condensation of two molecules of urea, the parent compound of the biuret group of compounds. Used as a non-protein nitrogen source in ruminant feed.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
carbamoylurea
CAS number
108-19-0 CAS number cross-checked
EC number
203-559-0
Molecular formula
C2H5N3O2
UNII
89LJ369D1H
MDL number
MFCD00007946
InChIKey
OHJMTUPIZMNBFR-UHFFFAOYSA-N
InChI
InChI=1S/C2H5N3O2/c3-1(6)5-2(4)7/h(H5,3,4,5,6,7)
SMILES (canonical and isomeric)
C(=O)(N)NC(=O)N

Synonyms

  • Carbamoylurea
  • Allophanamide
  • Imidodicarbonic diamide
  • Carbamylurea
  • Ureidoformamide
  • Allophanic acid amide
  • Dicarbamylamine
  • Isobiuret
  • Allophanimidic acid
  • Urea, (aminocarbonyl)-
  • Dicarbonimidic diamide
  • 1-(carbamoylamino)formamide
  • 2-imidodicarbonic diamide
  • (aminocarbonyl)urea
  • Isobiuret (VAN)
  • Biuret (contains ca. 10% Triuret)
  • Allophanimidic acid (VAN)
  • Biuret reagent
  • Biuret, 97%
  • Dicarbonimidic diamide #
  • Allophanamide, pure
  • amino-N-(???methyl)amide
  • Allophanamide, 55%
  • Biuret, for synthesis, 97.0%
  • I(1/4)-imido-dicarbonic acid diamide
Show all 26 synonyms
  • Biuret, Vetec(TM) reagent grade, 98%

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
Elongated plates from ethanolexp.
Odour
ODORLESSexp.
Melting point
190 °Cexp.
Density
1.467 @ -5 °C/4 °Cexp.
Solubility
SOL IN 100 G WATER: 2.01 G @ 25 °C, 7 G @ 50 °C, 20 G @ 75 °C, 53.5 G @ 105.5 °C, FREELY SOL IN ALCOHOL, VERY SLIGHTLY SOL IN ETHERexp.

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
103.08 g/molcalc.
Exact mass
103.0382 Dacalc.
LogP (octanol/water)
-1.27calc.
Topological polar surface area
98.21 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

Biuret suppliers

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

All 31 suppliers
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Where suppliers are based

31 suppliers in 8 countries

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Biuret price

Indicative price range per kg from live supplier offers

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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 analytical chemistry.

In manufacture of urea fertilizer.

Industrial uses: Soil amendments (fertilizers).

Consumer uses: Soil amendments (fertilizers).

Pharmacological actions

  • Indicators and Reagents

How it is made

On a large scale by the action of heat on urea. Other syntheses are based on treatment of urea with inorganic halides, such as thionyl chloride, on the interaction of urea & cyanic acid, & on ammonolysis of allophanic esters & related compd.

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 Biuret is traded under.

HS 2925.19Indicative HS code

Imides and their derivatives, salts thereof, other

World exports in 2024
$295M
+11.7% vs 2023, imports $348M
2019 to 2024
Top exporters
  1. China29.7%
  2. Japan22.7%
  3. United Kingdom10.0%
Top importers
  1. United States12.7%
  2. Brazil12.6%
  3. China10.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Biuret?

Biuret is a member of the class of condensed ureas that is the compound formed by the condensation of two molecules of urea, the parent compound of the biuret group of compounds. Used as a non-protein nitrogen source in ruminant feed.

What is the CAS number of Biuret?

The CAS registry number of Biuret is 108-19-0.

What is the molecular formula and weight of Biuret?

The molecular formula of Biuret is C2H5N3O2 and its molar mass is 103.08 g/mol.

What is Biuret used for?

In analytical chemistry. In manufacture of urea fertilizer. Industrial uses: Soil amendments (fertilizers). Consumer uses: Soil amendments (fertilizers).

Is Biuret hazardous?

Biuret carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Biuret?

Biuret is usually classified under HS code 292519 (Imides and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Biuret?

CompoundList lists 31 suppliers of Biuret in United States, China, India, Czech Republic and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Biuret in India?

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

What is the price of Biuret?

Suppliers quote Biuret 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 Biuret

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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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