U

Urea

IUPAC: urea

CH4N2O Organic Compounds CAS 57-13-6
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Quick Reference
Formula / NotationCH4N2O
CAS Number57-13-6
Molecular Weight60.056
Melting Point275 °F (NTP, 1992)
Boiling PointDecomposes (NTP, 1992)
Density1.34 at 68 °F (USCG, 1999) - Denser than water; will sink
SolubilitySoluble (NTP, 1992)
AppearanceUrea appears as solid odorless white crystals or pellets. Density 1.335 g /cc. Noncombustible.
Also Known As57-13-6; carbamide; Carbonyldiamide; Ureophil; Carbonyldiamine; Ureaphil; Keratinamin; Urevert; Alphadrate; Aquadrate
CategoryOrganic Compounds

What is Urea?

Urea is a carbonyl group with two C-bound amine groups. The commercially available fertilizer has an analysis of 46-0-0 (N-P2O5-K2O). It has a role as a fertilizer, a flour treatment agent, a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a human metabolite and a Daphnia magna metabolite. It is a monocarboxylic acid amide and a one-carbon compound. It is functionally related to a carbonic acid. It is a tautomer of a carbamimidic acid.

Formula & Notation

CH4N2O

IUPAC Name: urea

Other Names / Synonyms: 57-13-6; carbamide; Carbonyldiamide; Ureophil; Carbonyldiamine; Ureaphil; Keratinamin; Urevert; Alphadrate; Aquadrate

Properties & Characteristics

Appearance: Urea appears as solid odorless white crystals or pellets. Density 1.335 g /cc. Noncombustible.. Molecular formula: CH4N2O. Molecular weight: 60.056 g/mol. Boiling point: Decomposes (NTP, 1992). Melting point: 275 °F (NTP, 1992). Density: 1.34 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: Soluble (NTP, 1992). Vapor pressure: 0.000012 [mmHg]. LogP: -1.4.

Physical Data

PropertyValue
Melting Point275 °F (NTP, 1992)
Boiling PointDecomposes (NTP, 1992)
Density1.34 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight60.056
SolubilitySoluble (NTP, 1992)
AppearanceUrea appears as solid odorless white crystals or pellets. Density 1.335 g /cc. Noncombustible.

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Urea
Formula CH4N2O
CAS Number 57-13-6
Molecular Weight 60.056
Synonyms 57-13-6; carbamide; Carbonyldiamide; Ureophil; Carbonyldiamine; Ureaphil; Keratinamin; Urevert; Alphadrate; Aquadrate

Frequently Asked Questions

Urea is a carbonyl group with two C-bound amine groups. The commercially available fertilizer has an analysis of 46-0-0 (N-P2O5-K2O). It has a role as a fertilizer, a flour treatment agent, a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a human metabolite and a Daphnia magna metabolite. It is a monocarboxylic acid amide and a one-carbon compound. It is functionally related to a carbonic acid. It is a tautomer of a carbamimidic acid.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.