L-Methionine ≥99%, Millipore®

Supplier: Merck
Ratings: (No Reviews)

Total Ratings: 0
Avg. Ratings: 0.0 out of 5


M-Clarity™ quality level = MQ100

1.05707.1000 1.05707.9010
1.05707.1000EA 442 GBP
1.05707.1000 1.05707.9010
L-Methionine ≥99%, Millipore®
L-Methionine
Formula: C₅H₁₁NO₂S
Boiling Pt: 278 °C (1013 hPa)
Melting Pt: 136 °C
Density: 1.373 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00063097
CAS Number: 63-68-3
EINECS: 200-562-9
Merck Index: 13,06004

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Specification Test Results

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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