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33247

Sigma-Aldrich

Ureia

puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99%

Sinônimo(s):

Carbamida, Carbonil diamida

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About This Item

Fórmula linear:
NH2CONH2
Número CAS:
Peso molecular:
60.06
Beilstein:
635724
Número CE:
Número MDL:
Código UNSPSC:
12352100
ID de substância PubChem:
NACRES:
NA.21

grau

ACS reagent
puriss. p.a.

Nível de qualidade

Agency

reag. Ph. Eur.

Ensaio

≥99%
99-101% (calc. on dry substance)

forma

solid

Impurezas

alkalic reac. substances, complies
≤0.0005% heavy metals (as Pb)
≤0.05% ammonium (NH4)
≤0.1% biuret

resíduo de ignição

≤0.01% (as SO4)

perda

≤1.0% loss on drying, 105°C, 1 h

pf

132-135 °C (lit.)
132-135 °C

solubilidade

H2O: soluble 480 g/L at 20 °C

densidade

1.335 g/mL at 25 °C (lit.)

traços de ânion

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤10 mg/kg

traços de cátion

Fe: ≤2 mg/kg

adequação

in accordance for appearance of solution
in accordance for identity

cadeia de caracteres SMILES

NC(N)=O

InChI

1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)

chave InChI

XSQUKJJJFZCRTK-UHFFFAOYSA-N

Informações sobre genes

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Descrição geral

Urea is a colorless, odorless solid. It has prism-like crystals. It forms insoluble nitrate salts with nitric acid and oxalate salts with oxalic acid. On reaction with alkanes or substituted alkanes, it affords crystal-lattice inclusion compounds.
Urea is the most commonly used slow release nitrogen fertilizer.

Aplicação

Urea has been used in the following studies:
  • Synthesis of SnO2 nanoparticles.
  • Synthesis of urethanes, ureides and semicarbazides.
  • Denaturation of protein isolated from Saccharomyces cerevisiae Y15696 strain.
  • Protein electrophoretic studies.
Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form.
Usado na desnaturação de proteínas e como agente suave de solubilização para proteínas insolúveis ou desnaturadas. Útil para renaturar proteínas de amostras já desnaturadas com cloreto de guanidina 6 M, como corpos de inclusão. Pode ser usado com cloridrato de guanidina e ditiotreitol (DTT) para renaturação de proteínas desnaturadas para sua forma nativa ou ativa.

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)


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The Fertilizer Encyclopedia, 709-709 (2009)
Genna L Andrews et al.
Analytical chemistry, 83(13), 5442-5446 (2011-05-31)
The TripleTOF 5600 System, a hybrid quadrupole time-of-flight mass spectrometer, was evaluated to explore the key figures of merit in generating peptide and protein identifications that included spectral acquisition rates, data quality, proteome coverage, and biological depth. Employing a Saccharomyces
Joost P J J Hegmans et al.
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Photoelectrochemical water splitting half reactions on semiconducting photoelectrodes have received much attention but efficient overall water splitting driven by a single photoelectrode has remained elusive due to stringent electronic and thermodynamic property requirements. Utilizing a tandem configuration wherein the total

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