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Description

BIUREA · CAS 110-21-4 · C2H6N4O2. UNII POJ4UOY01H. Melting Point: 471 to 473 °F (NTP, 1992); Melting Point: 258 °C; Solubility: In water, 238 mg/L at 16 °C.

Identification

CAS Registry Number	110-21-4
PubChem CID	8039
Molecular formula	C2H6N4O2
IUPAC name	(carbamoylamino)urea
UNII (FDA)	POJ4UOY01H

Computed Descriptors

Molecular Weight	118.10
XLogP3	-2.1
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	118.04907545
Monoisotopic Mass	118.04907545
Topological Polar Surface Area	110
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Melting Point	471 to 473 °F (NTP, 1992)
Melting Point	258 °C
Solubility	In water, 238 mg/L at 16 °C
Vapor Pressure	0.0000595 [mmHg]

Physical description & handling notes

• Biurea is a white powder. (NTP, 1992)
• White solid; [CAMEO]
• Plates from water
• less than 1 mg/mL at 66 °F (NTP, 1992)
• 5.9X10-5 mm Hg at 25 °C /Estimated/
• log Kow = -2.37 /Estimated/

Regulatory Status

GHS notification summary	88.1% (37 / 42)

GHS Hazard Classification

GHS notification summary	88.1% (37 / 42)
Reported hazard statements	H315 (11.9%), H319 (11.9%), H335 (11.9%)

Documented Uses

• Used as a chemical intermediate in the production of azodicarbonamide (a high volume chemical blowing agent); [HSDB]
• Used as a chemical intermediate in the production of azodicarbonamide, a large volume chemical blowing agent.
• The unsubstituted parent semicarbazide is best made from urea and hydrazine; using excess urea, hydrazodicarbonamide is formed.
• /Hydrazodicarboxamide/ is made by refluxing an aqueous solution of urea and hydrazine.
• 1,2-Hydrazinedicarboxamide: ACTIVE
• /In animals/ the compound is mainly excreted in the feces and to a smaller part in the urine after oral dosing.

Synonyms

Biurea; 110-21-4; 1,2-HYDRAZINEDICARBOXAMIDE; Ureidourea; Bicarbamamide; Bicarbamimidic acid; Hydrazodicarbonamide; Hydrazodicarboxamide; Hydradicarbonamide; Hydrazocarbonamide; Urea, ureido-; Pseudourea, 3-ureido-; Semicarbazide, 1-carbamoyl-; Ureidoureacarboxamide; N,N'-Biscarbamoylhydrazine; 1,1-Hydrazoformamide

Frequently Asked Questions

What are the CAS number and molecular formula of BIUREA?

CAS 110-21-4; molecular formula C2H6N4O2; molecular weight — g/mol.

What other names is BIUREA known by?

Biurea, 110-21-4, 1,2-HYDRAZINEDICARBOXAMIDE, Ureidourea, Bicarbamamide, Bicarbamimidic acid.

Is BIUREA classified as hazardous?

88.1% of GHS notifications report no hazard classification (37 of 42).

What are the key physical properties of BIUREA?

Melting Point: 471 to 473 °F (NTP, 1992); Melting Point: 258 °C; Solubility: In water, 238 mg/L at 16 °C; Vapor Pressure: 0.0000595 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.