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Merck
CN

33247

尿素

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

别名:

碳酰二胺, 碳酰胺

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关于此项目

线性分子式:
NH2CONH2
化学文摘社编号:
57-13-6
分子量:
60.06
NACRES:
NA.21
PubChem Substance ID:
57648752
UNSPSC Code:
12352100
EC Number:
200-315-5
MDL number:
MFCD00008022
Beilstein/REAXYS Number:
635724

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产品名称

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

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

InChI

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

SMILES string

NC(N)=O

grade

ACS reagent
puriss. p.a.

agency

reag. Ph. Eur.

assay

≥99%
99-101% (calc. on dry substance)

form

solid

impurities

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

ign. residue

≤0.01% (as SO4)

loss

≤1.0% loss on drying, 105°C, 1 h

mp

132-135 °C (lit.)
132-135 °C

solubility

H2O: soluble 480 g/L at 20 °C

density

1.335 g/mL at 25 °C (lit.)

anion traces

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

cation traces

Fe: ≤2 mg/kg

suitability

in accordance for appearance of solution
in accordance for identity

functional group

amine

Quality Level

200

Gene Information

human ... CA1(759), CA2(760)
rat ... Ppm1a(24666)

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相关类别

Application

尿素已用于以下研究：
  • SnO2 纳米粒子的合成。
  • 氨基甲酸酯、脲和氨基脲的合成。
  • 从酿酒酵母 Y15696 菌株分离的蛋白质的变性。
  • 蛋白质电泳研究。
用于蛋白质变性以及作为不溶性或变性蛋白的温和增溶剂。可用于从已由 6M 盐酸胍变性的样品(如包涵体)复性蛋白质。可与盐酸胍和二硫苏糖醇 (DTT) 一起用于复性变性蛋白以恢复其天然或活性形式。

General description

尿素是无色无味的固体。它晶体呈棱柱状。它与硝酸和草酸盐与草酸形成不溶性硝酸盐。在与烷烃或取代的烷烃反应时，它提供晶格包合化合物。
尿素是最常用的缓释氮肥。

存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCN2961
SDBB2451
SDBB1243
SDBB0875
STBL4385

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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.
The American journal of pathology, 164(5), 1807-1815 (2004-04-28)
Exosomes are small membrane vesicles secreted into the extracellular compartment by exocytosis. Tumor exosomes may be involved in the sampling of antigens to antigen presenting cells or as decoys allowing the tumor to escape immune-directed destruction. The proteins present in
Humaira Seema et al.
Nanotechnology, 23(35), 355705-355705 (2012-08-17)
Graphene sheets decorated with SnO(2) nanoparticles (RGO-SnO(2)) were prepared via a redox reaction between graphene oxide (GO) and SnCl(2). Graphene oxide (GO) was reduced to graphene (RGO) and Sn(2+) was oxidized to SnO(2) during the redox reaction, leading to a
Gurudayal et al.
Nano letters, 15(6), 3833-3839 (2015-05-06)
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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