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1. pubchem.ncbi.nlm.nih.gov › compound › ureaUrea | NH2CONH2 | CID 1176 - PubChem

   pubchem.ncbi.nlm.nih.gov › compound › urea

   Pure urea should not give the biuret reaction unless heated above melting point. In practice all reagent grade urea gives positive biuret reaction.

   • Urea Hydrochloride

     Urea monohydrochloride: Does not have an individual approval...

   • Urea Phosphate

     Urea Phosphate: Does not have an individual approval but may...

2. en.wikipedia.org › wiki › UreaUrea - Wikipedia

   en.wikipedia.org › wiki › Urea

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   The substance decomposes on heating above melting point, producing toxic gases, and reacts violently with strong oxidants, nitrites, inorganic chlorides, chlorites and perchlorates, causing fire and explosion.

3. webbook.nist.gov › cgi › cbookUrea - NIST Chemistry WebBook

   webbook.nist.gov › cgi › cbook

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   SRD 103b – Thermo Data Engine (TDE) for pure compounds, binary mixtures and chemical reactions; SRSD 2 – Web Thermo Tables (WTT), "lite" edition; SRSD 3 – Web Thermo Tables (WTT), professional edition; SRD 147 – Ionic Liquids Database; ... , Some physicochemical data of urea near the melting point<, Chem. Tech. (Leipzig), 1980, 32, 143.

4. webbook.nist.gov › cgi › cbookUrea - NIST Chemistry WebBook

   webbook.nist.gov › cgi › cbook

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   The webpage provides information about the molecular structure of Urea, including gas phase ion energetics data, IR spectrum, and mass spectrum.

5. hpvchemicals.oecd.org › UI › handlerOECD SIDS UREA

   hpvchemicals.oecd.org › UI › handler

   Chemical Name : Urea Common Name : Urea RTECS Number : YR6250000 Properties & Definitions Molecular Formula : CH4N2O Molecular Weight : 60.06 Melting Point : 133C* Boiling Point : 135C decomposition**

6. www.sciencemadness.org › smwiki › indexUrea - Sciencemadness Wiki

   www.sciencemadness.org › smwiki › index

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   10 lip 2022 · Its melting point is between 133-135 °C. Urea is soluble in water (107.9 g/100 ml at 20 °C) and when dissolved, it is neutral on the pH scale. Urea is soluble in glycerol (500 g/L) and slightly less soluble in ethanol .

7. webbook.nist.gov › cgi › cbookUrea - NIST Chemistry WebBook

   webbook.nist.gov › cgi › cbook

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   Urea. Formula: CH 4 N 2 O. Molecular weight: 60.0553. IUPAC Standard InChI: InChI=1S/CH4N2O/c2-1 (3)4/h (H4,2,3,4) Copy Sheet of paper on top of another sheet. IUPAC Standard InChIKey: XSQUKJJJFZCRTK-UHFFFAOYSA-N. Copy Sheet of paper on top of another sheet. CAS Registry Number: 57-13-6. Chemical structure: