推薦產品
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
human ... CA1(759) , CA2(760)
rat ... Ppm1a(24666)
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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。
- 从酿酒酵母 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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