L-Phenylalanine

CP2015

AJI92

USP40

FCCVI

Description

White crystals or crystalline powder

White crystals or crystalline powder

White crystals or crystalline powder

White crystals or crystalline powder

Identification

Conforms

Conform

Conform

Infrared Absorption

Assay

≥98.5%

99.0%～100.5%

98.5%~101.5%

98.5%~101.5%

pH

5.4~6.0

5.4~6.0

5.5~7.0

5.4~6.0

Transmittance

≥98.0%

≥98.0%

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Loss on drying

≤0.2%

≤0.20%

≤0.3%

≤0.2%

Residue on ignition

≤0.1%

≤0.10%

≤0.4%

≤0.1%

Chloride

≤0.02%

≤0.020%

≤0.05%

≤0.02%

Heavy Metals

≤0.001%

≤10ppm

≤15ppm

≤15mg/kg

Lead

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≤5 mg/kg

Iron

≤0.001%

≤10ppm

≤30ppm

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Sulfate

≤0.02%

≤0.020%

≤0.03%

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Endotoxin

＜25EU/g

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Arsenic

≤0.0001%

≤1ppm

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≤2mg/kg

Ammonium

≤0.02%

≤0.02%

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Other amino acids

Conforms

Conforms

Conforms

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Pyrongen

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Conforms

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Specific Rotation

-33.5°~ -35.0°

-33.5°~ -35.0°

-32.7°~-34.7°

-33.2°~ -35.2°