L-Proline

CP2015

AJI92

USP30

USP40

Description

White crystals or crystalline powder

White crystals or crystalline powder

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Identification

Conforms

Conform

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Conform

Assay

≥98.5%

99.0%~101.0%

98.5%~101.5%

98.5%~101.5%

pH

5.9~6.9

5.9~6.9

5.9~6.9

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Transmittance

≥98.0%

≥98.0%

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Loss on drying

≤0.3%

≤0.30%

≤0.3%

≤0.4%

Residue on ignition

≤0.1%

≤0.10%

≤0.1%

≤0.4%

Chloride

≤0.02%

≤0.020%

≤0.05%

≤0.05%

Heavy Metals

≤0.001%

≤10ppm

≤15ppm

≤15ppm

Iron

≤0.001%

≤10ppm

≤0.003%

≤0.003%

Sulfate

≤0.02%

≤0.020%

≤0.03%

≤0.03%

Endotoxin

＜10EU/g

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Ammonium

≤0.0001%

≤1ppm

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Annonium

≤0.02%

≤0.02%

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Other amino acids

Conforms

Conforms

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Conforms

Pyrongen

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Conforms

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Specific Rotation

-84.5°~ -86.0°

-84.5°~ -86.0°°

-84.5°~ -86.0°°

-84.3°~ -86.3°°