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等级
ACS reagent
puriss. p.a.
质量水平
Agency
reag. Ph. Eur.
方案
≥99%
99-101% (calc. on dry substance)
表单
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
官能团
amine
SMILES字符串
NC(N)=O
InChI
1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
InChI key
XSQUKJJJFZCRTK-UHFFFAOYSA-N
基因信息
human ... CA1(759) , CA2(760)
rat ... Ppm1a(24666)
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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。
- 从酿酒酵母 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)
The Fertilizer Encyclopedia, 709-709 (2009)
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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
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Addition of the trinucleotide cytosine/cytosine/adenine (CCA) to the 3' end of transfer RNAs (tRNAs) is essential for translation and is catalyzed by the enzyme TRNT1 (tRNA nucleotidyl transferase), which functions in both the cytoplasm and mitochondria. Exome sequencing revealed TRNT1
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