1.08488
尿素
for biochemistry
别名:
碳酰二胺, 碳酰胺
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线性分子式:
NH2CONH2
化学文摘社编号:
分子量:
60.06
UNSPSC Code:
12352111
NACRES:
NA.21
EC Index Number:
200-315-5
MDL number:
Beilstein/REAXYS Number:
635724
form
solid
InChI key
XSQUKJJJFZCRTK-UHFFFAOYSA-N
SMILES string
NC(N)=O
InChI
1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
vapor pressure
<0.1 hPa ( 20 °C)
potency
8471 mg/kg LD50, oral (Rat), 8200 mg/kg LD50, skin (Rat)
technique(s)
titration: suitable
pH
9 (20 °C, 100 g/L in H2O)
Quality Level
solubility
1000 g/L
density
1.335 g/mL at 25 °C (lit.)
bulk density
720‑760 kg/m3
storage temp.
10-30°C
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Application
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。
Analysis Note
Purity (DSC (differential scanning calorimetry)): ≥ 99.5 %
Identity (IR-spectrum): passes test
Appearance: Colorless crystals or white crystalline powder.
Appearance of solution (100 g/l, water): Clear and colorless.
Melting point (DSC (differential scanning calorimetry)): 132 - 135 °C
UV-Absorption (260 nm; 8 mol/l; 1 cm; water): ≤ 0.1
UV-Absorption (280 nm; 8 mol/l; 1 cm; water): ≤ 0.1
Cyanide (CN): ≤ 0.000001 %
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0004 %
Fe (Iron): ≤ 0.00002 %
NH₄ (Ammonium): ≤ 0.00001 %
Biuret: ≤ 0.05 %
Sulfated ash (800 °C): ≤ 0.01 %
Identity (IR-spectrum): passes test
Appearance: Colorless crystals or white crystalline powder.
Appearance of solution (100 g/l, water): Clear and colorless.
Melting point (DSC (differential scanning calorimetry)): 132 - 135 °C
UV-Absorption (260 nm; 8 mol/l; 1 cm; water): ≤ 0.1
UV-Absorption (280 nm; 8 mol/l; 1 cm; water): ≤ 0.1
Cyanide (CN): ≤ 0.000001 %
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0004 %
Fe (Iron): ≤ 0.00002 %
NH₄ (Ammonium): ≤ 0.00001 %
Biuret: ≤ 0.05 %
Sulfated ash (800 °C): ≤ 0.01 %
存储类别
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
法规信息
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