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Merck

33247

Sigma-Aldrich

尿素

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

别名:

碳酰二胺, 碳酰胺

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About This Item

线性分子式:
NH2CONH2
CAS号:
分子量:
60.06
Beilstein:
635724
EC號碼:
MDL號碼:
分類程式碼代碼:
12352100
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent
puriss. p.a.

品質等級

agency

reag. Ph. Eur.

化驗

≥99%
99-101% (calc. on dry substance)

形狀

solid

雜質

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

燃燒殘留物

≤0.01% (as SO4)

損耗

≤1.0% loss on drying, 105°C, 1 h

mp

132-135 °C (lit.)
132-135 °C

溶解度

H2O: soluble 480 g/L at 20 °C

密度

1.335 g/mL at 25 °C (lit.)

負離子痕跡

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

正離子痕跡

Fe: ≤2 mg/kg

適合性

in accordance for appearance of solution
in accordance for identity

SMILES 字串

NC(N)=O

InChI

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

InChI 密鑰

XSQUKJJJFZCRTK-UHFFFAOYSA-N

基因資訊

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一般說明

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。

應用

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。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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