L-Arginine

AJI92

USP40

EP6.0

Description

White crystals or crystalline powder

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White or almost white crystalline powder or colourless crystals

Solubility

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Freely soluble in water,very slightly soluble in alcohol.

Identification

Conform

Conform

Conform

Appearance of solution

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Clarity of solution:5% water solution should be clear

Colour of solution:5% water solution should be not more intensively coloured than reference solution BY6

Assay

99.0%～101.0%

98.5%～101.5%

98.5%～101.0%

pH

10.5~12.0

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Transmittance

≥98.0%

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Loss on drying

≤0.5%

≤0.5%

≤0.5%

Residue on ignition

≤0.10%

≤0. 3%

≤0. 1%

Chloride

≤0.020%

≤0.05%

≤200ppm

Heavy Metals

≤10ppm

≤15ppm

≤10ppm

Iron

≤10ppm

≤30ppm

≤10ppm

Sulfate

≤0.020%

≤0.03%

≤200ppm

Endotoxin

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Arsenic

≤1ppm

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Ammonium

≤0.02%

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≤200ppm

Other amino acids

Conforms

Conforms

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Pyrogen

Conforms

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Cinematographic purity

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Specific Rotation

+26.9° ～ +27.9°

+26.3°～+27.7°

+25.5°～ +28.5°

Ninhydrin-positive substances  (TLC)

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Conform