1.08488

Urea

for biochemistry

• 동의어(들): Carbamide, Carbonyl diamide, Diaminomethanone, Carbonyldiamine, Carbamide, Carbonyldiamide
• Linear Formula: NH₂CONH₂
• CAS Number: 57-13-6
• Molecular Weight: 60.06
• Beilstein: 635724
• MDL number: MFCD00008022
• UNSPSC 코드: 12352111
• EC 인덱스 번호: 200-315-5
• NACRES: NA.21

속성

• vapor pressure: <0.1 hPa ( 20 °C)
• Quality Level: 100
• 형태: solid
• 효능: 8471 mg/kg LD₅₀, oral (Rat); 8200 mg/kg LD₅₀, skin (Rat)
• 기술: titration: suitable
• pH: 9 (20 °C, 100 g/L in H₂O)
• mp: 132-135 °C (lit.)
• solubility: 1000 g/L
• density: 1.335 g/mL at 25 °C (lit.)
• 벌크 밀도: 720‑760 kg/m³
• 저장 온도: 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

설명

애플리케이션

Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form.

분석 메모

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 %

안전성 정보

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable