DL-METHIONINE (FOR BIOCHEMISTRY)

DL-METHIONINE (FOR BIOCHEMISTRY)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
M0136000500 For Biochemistry 99% 59-51-8 C5H11NO2S 149.21 2930.4000
60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

White granular

Melting Point/ Freezing point [°C]

280 °C

Boiling point [°C]

186 °C

Density [g/cm3]

1.34

Solubility in water [% weight]

Soluble in water

Specifications

Appearance:

 White to almost white, crystalline powder or small flakes, melt at 270°C

Sulphated ash:

 Max 0.1%

Heavy metal (as Pb):

 Max 0.002%

Solubility:

 Sparingly soluble in water, very slightly soluble in alcohol. It dissolves in dilute acids and in dilute solutions of the alkali hydroxides

Identifications:

 To comply BP test

Appearance of solution:

 To comply BP test

Assay (Potentiometric; on anhydrous basis):

 99.0-101.0%

Chlorides:

 Max 0.02%

Loss on drying (at 105°C; 3 hrs):

 Max 0.5%

Related Substances ( by TLC):

 To comply BP test

Sulphates:

 Max 0.02%
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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