Merck
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33247

Sigma-Aldrich

尿素

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

Synonym(s):
碳酰二胺, 碳酰胺
Linear Formula:
NH2CONH2
CAS Number:
Molecular Weight:
60.06
Beilstein:
635724
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.21

质量水平

200

等级

ACS reagent
puriss. p.a.

Agency

reag. Ph. Eur.

测定

≥99%
99-101% (calc. on dry substance)

形式

solid

杂质

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

灼烧残渣

≤0.01% (as SO4)

缺失

≤1.0% loss on drying, 105°C, 1 h

mp

132-135 °C (lit.)
132-135 °C

溶解性

H2O: soluble 480 g/L at 20 °C

密度

1.335 g/mL at 25 °C (lit.)

痕量阴离子

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

痕量阳离子

Fe: ≤2 mg/kg

适用性

in accordance for appearance of solution
in accordance for identity

SMILES string

NC(N)=O

InChI

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

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

Gene Information

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一般描述

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。

应用

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。
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。
  • 酿酒酵母 Y15696 菌株分离的蛋白质的变性。
  • 蛋白质电泳研究。

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(F)

Not applicable

闪点(C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

Certificate of Analysis

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Certificate of Origin

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