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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 7913Generated: October 27, 2026

Biuret

BIURET REAGENT · IMIDODICARBONIC DIAMIDE · Dicarbonimidic diamide · iuret · Allophamicacidamide · L-101 · biure · BIURET

https://huagongshe.com/en/chemical/7913

Biuret molecular structure

Identifiers & Physical Properties

CAS No.108-19-0
Molecular formulaC2H5N3O2
Average molar mass103.08 g/mol
Monoisotopic mass103.03817641 g/mol
SMILESNC(=O)NC(N)=O
InChIKeyOHJMTUPIZMNBFR-UHFFFAOYSA-N
PubChem CID7913
ChEMBLCHEMBL1889026
ChEBICHEBI:18138
EC No.203-559-0
DTXSIDDTXSID2026783

Chemical & Physical Properties

XLogP-0.7
Topological polar surface area98.2
Hydrogen bond donors3
Hydrogen bond acceptors2
Rotatable bonds0
Heavy atoms7
Formal charge0
Complexity87.1
Chemical classesNitrogen Compounds -> Other Nitrogen Compounds
DrugsPharmaceuticals -> Metabolite of Metformin
SpringerMaterials Properties15N nuclear magnetic resonance spectrum
OdorODORLESS
Density1.467 @ -5 °C/4 °C1.01 g/mL at 20 °C
Color/FormELONGATED PLATES FROM ETHANOLNEEDLES FROM WATER CRYSTALLIZING WITH 1 MOLECULE OF WATER PER MOLECULE OF COMPDWHITE NEEDLES
SolubilitySOL IN 100 G WATER: 2.01 G @ 25 °C, 7 G @ 50 °C, 20 G @ 75 °C, 53.5 G @ 105.5 °CFREELY SOL IN ALCOHOLVERY SLIGHTLY SOL IN ETHERDMSO (Slightly), Methanol (Slightly, Heated, Sonicated)2 g/100 mL (25 ºC)
Melting point190 °C, DECOMP185-190 °C (dec.) (lit.)
Physical DescriptionCBIWhite hygroscopic solid[HSDB] White odorless powder[Alfa Aesar MSDS]
Other Experimental PropertiesHYGROSCOPICPYROLYSIS @ HIGH TEMP (GREATER THAN 193 °C) YIELDS MELAMINEWHEN CRYSTALLIZED FROM WATER, 5C2-H5-N3-O2.4H20 IS FORMED, WHICH BECOMES ANHYDROUS @ 110 °C, DECOMP @ ABOUT 193 °CAQ SOLN TREATED WITH CUPRIC SULFATE & SODIUM HYDROXIDE GIVE REDDISH-VIOLET COLOR
Boiling point100 °C
Refractive index1.4264 (estimate)
Storage conditions2-8°C
pKa (acidity coefficient)10.17±0.46(Predicted)
Physical stateLiquid
ColorWhite
SensitivityHygroscopic
Merck14,1309
BRN1703510
StabilityStable. Incompatible with strong oxidizing agents, strong bases. Hygroscopic.
InChI1S/C2H5N3O2/c3-1(6)5-2(4)7/h(H5,3,4,5,6,7)
InChIKeyOHJMTUPIZMNBFR-UHFFFAOYSA-N
SMILESNC(=O)NC(N)=O
CAS DataBase Reference108-19-0(CAS DataBase Reference)
FDA UNII89LJ369D1H
NIST Chemistry ReferenceImidodicarbonic diamide(108-19-0)
EPA Substance Registry SystemImidodicarbonic diamide (108-19-0)
UNSPSC Code41116107
NACRESNA.32
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P261-P280a-P304+P340-P405-P501a-P305+P351+P338
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Gloves
Hazard symbolsXi
Risk statements (R)36/37/38
Safety statements (S)26-36/37-36
Water hazard class (WGK)3
TSCA inventory statusTSCA listed
Customs code29241990
Storage class11 - Combustible Solids
Hazardous substances data108-19-0(Hazardous Substances Data)

Safety & Regulations

GHS classificationWarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 135 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatory informationChemical: Imidodicarbonic diamideImidodicarbonic diamide is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Imidodicarbonic diamide are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Imidodicarbonic diamide: Does not have an individual approval but may be used under an appropriate group standard
Hazards summaryMildly bacteriostatic and diuretic in ratsAlso causes drop in blood pressure, marked urinary tract irritation, and increases in pepsin activity[Merck Index] A skin and strong eye irritant[Alfa Aesar MSDS]
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
Explosive Limits and PotentialDURING CHLORINATION OF IMPURE BIURET IN WATER @ 20 °C, A VIOLENT EXPLOSION OCCURRED. THIS WAS ATTRIBUTED TO CONVERSION OF THE CYANURIC ACID IMPURITY (3%) TO NITROGEN TRICHLORIDE & SPONTANEOUS EXPLOSION OF THE LATTER.
Non-Human Toxicity ExcerptsHAS WEAK...DIURETIC PROPERTIES IN RATS, ALSO CAUSES A FALL IN BLOOD PRESSURE, BUT PRODUCES STRONG IRRITATION OF URINARY TRACT. INCREASES THE ACTIVITY OF PEPSIN....TOXIC TO SOME CROPS...
RAIS Toxicity Values0.0045CALEPA0.0004
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK)3
TSCA inventory statusTSCA listed
Customs code29241990
Risk statements (R)36/37/38
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
Safety statements (S)26-36/37-36
Storage class11 - Combustible Solids
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P261-P280a-P304+P340-P405-P501a-P305+P351+P338
Hazardous substances data108-19-0(Hazardous Substances Data)

Applications & Uses

Uses

1. Biuret is used in feed for ruminants, as feed additives as urea, like, but more safe than urea. 2. It is used as pharmaceutical intermediates, growth hormone, foaming agents, paints. 3. It is used for chemical analysis.

Uses

Analytical reagent, especially for proteins.

Uses

Biuret is used in protein assay. It is also used as Catalytic agent, Petrochemical additive. It is used in organic synthesis. Biuret (Carbamoylurea) was used as a source of dietary nitrogen in purified diets for steers.