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1.08488

尿素

Name: 尿素
Brand: MM

for biochemistry

别名:

碳酰二胺, 碳酰胺

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关于此项目

线性分子式:

NH₂CONH₂

化学文摘社编号:

57-13-6

分子量:

60.06

UNSPSC Code:

12352111

NACRES:

NA.21

EC Index Number:

200-315-5

MDL number:

MFCD00008022

Beilstein/REAXYS Number:

635724

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属性

vapor pressure

<0.1 hPa ( 20 °C)

Quality Level

100

form

solid

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)

solubility

1000 g/L

density

1.335 g/mL at 25 °C (lit.)

bulk density

720‑760 kg/m³

storage temp.

10-30°C

SMILES string

NC(N)=O

InChI

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

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

说明

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 %

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存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c