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L-Isoleucine

L-Isoleucine

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Persona de contacto allen

LIQUAN, Binzhou, Shandong

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Description

L-Isoleucine  
  center Corn starch is powder through flooding, broken, separate, refining and dry from corn as raw materials, the color and luster is pure white, the smell is pure, widely used in food, medicine, starch deep processing, chemical industry,etc.  
 
FCC4
Item Limit Result
Assay 98.5~101.5% 99.8%
pH ?5.5~7.0 6.13
Specific rotation[a]D20 +38.6°ï½ž+41.5° +40.81°
Heavy metals(Pb) ≤20ppm

< 20ppm

Loss on drying ≤0.30%

0.10%

Residue on ignition ≤0.20%

0.01%

   
AJI92
Item Limit Result
Assay 98.5~101.0% 99.8%
pH 5.5~6.5

5.8

Specific rotation[a]D20 +39.5°ï½ž+41.5° +40.2°
State of solution clear & colorless clear & colorless
(Transmittance T430) ?≥98.0% 99.5%
Chloride(Cl) ≤0.02% < 0.02%
Ammonium(NH4) ≤0.02% < 0.02%
Sulfate(SO4) ≤0.02% < 0.02%
Iron(Fe) ≤10ppm < 10ppm
Heavy metals(as Pb) ≤10ppm < 10ppm
Arsenic(As2O3) ≤1ppm < 1ppm
Other amino acids ≤0.5% conforms
Loss on drying ≤0.20% 0.15%
Residue on ignition ≤0.10% 0.03%
   
USP24
Item Limit Result
Assay ?98.5~101.5%

99.7%

pH 5.5~7.0 5.9
Specific rotation[a]D20 +38.9°ï½ž+41.8° +41.1°
Chloride(Cl) ≤0.05 < 0.05%
Sulfate(SO4) ≤0.03% < 0.03%
Iron(Fe) ≤30ppm < 30ppm
Heavy metals(Pb) ≤15ppm < 15ppm
Arsenic(AS) ≤1.5ppm < 1.5ppm
Loss on drying ≤0.3% 0.06%
?Residue on ignition ≤0.3% 0.01%
Organic volatile impurities ?conform

conform

 

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