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HOME ->
PRODUCTS
-> L-TRYPTOPHAN
L-TRYPTOPHAN
SPECIFICATIONS
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ITEMS
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SPECIFICATIONS
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Description
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White to slightly
yellowish crystalline powder
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Identification (IR)
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Positive
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Assay (dry basis)
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99.0 – 101.0%
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Specific Rotation [α]D20
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-30.5°
to -32.5°
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pH
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5.5 – 6.4
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Transmittance
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95.0% Min.
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Loss on Drying
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0.20% Max.
(3 hours at 105
°C)
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Residue on Ignition
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0.10% Max.
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Other Amino Acids
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As per AJI
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Chloride (Cl)
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0.020% Max.
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Sulfate (SO4)
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0.020% Max.
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Ammonium (NH4)
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0.020% Max.
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Iron (Fe)
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20 ppm Max.
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Heavy Metals
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10 ppm Max
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Arsenic
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1 ppm Max.
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Pyrogen
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Free
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