Urea for biochemistry, Millipore®
: Merck
:57-13-6
:
:NH₂CONH₂
:MFCD00008022
:13,09935
:197 °C (1013 hPa)
:134 °C
:1.32 g/cm³ (20 °C)
:M-Clarity™ quality level = MQ100
:60.06 g/mol
:Ambient
:200-315-5
:01-2119463277-33
- Purity (DSC (differential scanning calorimetry)):≥ 99.5 mol%
- Identity (IR-spectrum):passes test
- Appearance:Colorless crystals or white crystalline powder.
- Appearance of solution (100 g/l, water):Clear and colorless.
- APHA (5M, water):≤ 10 APHA
- Turbidity (5M, water):≤ 2.0 NTU
- Insoluble matter:≤ 0.0005 %
- Conductivity (5M, water, 25 °C):≤ 15 µS/cm
- 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 %
- DNases (Exo- and endonucleases):not detectable
- RNases:not detectable
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