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Urea

Catalog No. U0631 Name Sigma Aldrich
CAS Number 57-13-6 Website http://www.sigmaaldrich.com
M. F. CH4N2O Telephone 1-800-521-8956
M. W. 60.05526 Fax
Purity Email
Storage Chembase ID: 3541

SYNONYMS

Title
尿素
IUPAC name
urea
IUPAC Traditional name
urea
Synonyms
碳酰胺
碳酰二胺

DATABASE IDS

EC Number 200-315-5
PubChem SID 24900617
MDL Number MFCD00008022
Beilstein Number 635724
CAS Number 57-13-6

PROPERTIES

Antion Traces chloride (Cl-): ≤0.05%
Antion Traces sulfate (SO42-): ≤0.05%
Cation Traces Al: ≤0.0005%
Cation Traces Ca: ≤0.0005%
Cation Traces Cu: ≤0.0005%
Cation Traces Fe: ≤0.0005%
Cation Traces K: ≤0.005%
Cation Traces Mg: ≤0.0005%
Cation Traces NH4+: ≤0.05%
Cation Traces Na: ≤0.005%
Cation Traces Pb: ≤0.001%
Cation Traces Zn: ≤0.0005%
Ignition Residue ≤0.1%
Impurities ≤0.005% Phosphorus (P)
Impurities ≤0.1% Insoluble matter
Gene Information human ... CA1(759), CA2(760)rat ... Ppm1a(24666)
Absorption Wavelength A5M/260 nm ≤0.06
Absorption Wavelength A5M/280 nm ≤0.06
Density 1.335 g/mL at 25 °C(lit.)
Melting Point 132-135 °C(lit.)
pH 7.5-9.5 (20 °C, 5 M in H2O)
Solubility H2O: soluble5 M at 20 °C, clear, colorless
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
RTECS YR6250000
German water hazard class 1

DETAILS

Description (简体中文)
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。

REFERENCES