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UREA
尿素（高纯级）
Description
Commonly used to denature nucleic acids for electrophoresis ａnd to study the secondary ａnd tertiary structure of proteins. Effective for maintaining DNA in a highly denatured state during sequencing protocols, urea is also useful for accelerating the activity of Proteinase K digestions.
HIGH PURITY GRADE
Molecular Formula: CH4N2O
Molecular Weight: 60.06
CAS: [57-13-6]
Abs.@280nm…………………………………………………………………………………≤0.05
Biuret Test……………………………………………………………………………………PASS
Chloride (%)……………………………………………………………………………≤0.0005
Conductivity (5M,Water)(umhos)…………………………………………………………≤15
Cyanate (%)………………………………………………………………………………≤0.002
DNase………………………………………………………………………………None Detected
Heavy Metals (as Pb) (%)………………………………………………………………≤0.0005
Identification………………………………………………………………………………PASS
Insolubles (%)……………………………………………………………………………≤0.005
Iron (%)…………………………………………………………………………………≤0.0001
Melting Point (°C)……………………………………………………………………132-135
Protease……………………………………………………………………………None Detected
Purity (%)…………………………………………………………………………………≥99.5
RNase………………………………………………………………………………None Detected
Solubility (5M, Water)……………………………………………………………………PASS
RISK………………………………………………………………………………………36/37/38
SAFETY……………………………………………………………………………………36/37/39
