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L-Threonine
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[Product
Name]
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L-Threonine
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[Molecular
formula]
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C4H9NO3
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[Appearance]
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White crystalline powder
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 |
 |
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Assay
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99.0%~100.5%
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Specific rotation
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-27.6¡ã~ -29.0¡ã
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Transmittance
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¡Ý98%
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Chloride(Cl)
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¡Ü0.020%
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Amonium(NH4)
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¡Ü0.02%
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Sulfate(SO4)
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¡Ü0.020%
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Iron(Fe)
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¡Ü10ppm
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Heavy metals(Pb)
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¡Ü10ppm
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Arsenic(As2O3)
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¡Ü1ppm
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Other amino acids
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chromatogrphically not detectable
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Loss on drying
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¡Ü0.20%
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Residue on ignition
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¡Ü0.10%
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PH value
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5.2~ 6.2
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