L-Methionine ≥99%, Millipore®
: Merck
:63-68-3
:
:C₅H₁₁NO₂S
:MFCD00063097
:149.21 g/mol
:13,06004
:278 °C (1013 hPa)
:136 °C
:1.373 g/cm³ (20 °C)
:M-Clarity™ quality level = MQ100
:Ambient
:200-562-9
- Assay (HClO4-titration):99% min
- Ammonium (NH4):0.01% max
- Appearance:Passes test
- Appearance of solution (0.5mol/L, HCl 1mol/L):Passes test
- Arsenic (As):0.0005% max
- Calcium (Ca):0.001% max
- Chloride (Cl):0.02% max
- Cobalt (Co):0.0005% max
- Foreign amino acids:0.3% max
- Heavy metals (as Pb):0.001% max
- Identity (IR-spectrum):Passes test
- Iron (Fe):0.0005% max
- Loss on drying [105°, 3 hr):0..3% max
- Magnesium (Mg):0.0005% max
- Other ninhydrine positive substances (as glycine):0.1% max
- Potassium (K):0.0005% max
- Sodium (Na):0.005% max
- Specific rotation ([a]20/D, 5%, in 1N HCl):+22.5-+23.5°
- Sulfate (SO4):0.01% max
- UV Absorption (260nm, 0.5mol/L, 1cm, HCl 1mol/L):0.5 max
- UV Absorption (280nm, 0.5mol/L, 1cm, HCl 1mol/L):0.2 max
- Zinc (Zn):0.0005% max
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