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Selenium Methionine

Product name: Selenium Methionine
Molecular formula:

C5H11NO2S  
CAS NO.: 2578-28-1
Index: 98
Other:

Molecular formula ：C5H11NO2S        Molecular weight ：149.21

Application ：It is used in biochemical research and nutritional supplements, as well as in the adjuvant treatment of pneumonia, cirrhosis and fatty liver.

Property ：This product is white crystal or crystalline powder. Melting point 276-279 ° C (dec.), specific optical rotation 23.25 ° (c = 2, 6N HCl). Water soluble: soluble.

CAS NO.:63-68-3

Item

AJI92

USP26

Assay

99.0～101.0%

98.5～101.5%

pH

5.0～6.5

5.0～6.5

Specific rotation

[a]D020

-11.3~-12.1º

　　　　　　　　　　　

[a]D025

-9.8～-11.2º

Transmittance(T430)

≥98.0%

 

Chloride(Cl)

≤0.02%

≤0.04%

Ammonium(NH4)

≤0.02%

 

Sulfate(SO4)

≤0.02%

≤0.04%

Iron(Fe)

≤10ppm

≤30ppm

Heavy metals(Pb)

≤10ppm

≤15ppm

Arsenic

≤1ppm(As2O3)

≤1.5ppm(As2O3)

Other amino acids

Conforms

 

Loss on drying

≤0.20%

≤0.30%

Residue on ignition

≤0.10%

≤0.40%

Organic volatile impurities

 

Conforms

Supply reference

Production Process

 

Packing specification

 

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Quote reference          yuan/ton

 

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