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CAS NO.59-51-8
Methionine can be used as nutional supplement. DL-methionine has the same effect with L-methionine, but DL-methionine is cheaper.
Physical Properties
Appearance:white crystalline powder with a faint odor
Molecular Weight:149.21
Density:1.34
Boiling Point:306.9 °C at 760 mmHg
Melting Point:270-273℃
Flash Point:139.4 °C
Storage Temperature:0-6°C
Solubility:2.9 g/100 mL (20 °C) in water
Stability:Stable. Incompatible with strong oxidising agents.
Specification
|
Item |
Specifications |
|
|
EP4/BP2001 |
FCCIV |
|
|
Appearance |
White crystalline platelets or powder |
|
|
Assay (C5H11NO2S),%(on dry matter) |
99.0~101.0 |
98.5~101.5 |
|
Clarity of solution, |
Clear |
Clear |
|
Transmittance, % (2.5%, 430ml) |
≥98.0 |
- - - |
|
pH Value(5% in water) |
5.4~6.1 |
5.6~6.1 |
|
Heavy Metals (as Pb), % |
≤0.001 |
≤0.002 |
|
Arsenic (as As), % |
≤0.0001 |
≤0.0002 |
|
Sulfate (as SO4), % |
≤0.02 |
≤0.02 |
|
Chloride (as Cl),% |
≤0.02 |
- - - |
|
Loss on drying, % |
≤0.5 |
≤0.5 |
|
Residue on ignition, % |
≤0.1 |
≤0.1 |
|
Ammonium as (as NH4), % |
≤0.01 |
- - - |
|
Other amino acid |
Not detd. |
Not detd. |