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Shijiazhuang Jirong Pharmaceutical Co., Ltd.
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L-Serine

CAS No. : 56-45-1
Molecular formular: C3H7NO3
Molecular weight: 105.09
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Product description
Parameters

L-Serine

EP6

AJI92

USP40

Description

A white or almost white, crystalline powder or  colourless crystals.

White crystals or crystalline powder

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Solubility

Freely soluble in water,practically insoluble in alcohol.

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/

 

Appearance of solution

Clarity of solution:5% water solution should be clear

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

Identification

Conforms

Conforms

Conforms

Assay

98.5%-101.0%

99.0%~101.0%

98.5%~101.5%

pH

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5.2~6.2

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Transmittance

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≥98.0%

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Loss on drying

≤0.5%

≤0.20%

≤0.2%

Residue on ignition

≤0.1%

≤0.10%

≤0.1%

Ninhydrin-positive

Conforms

/

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Chloride

≤200ppm

≤0.020%

≤0.05%

Heavy Metals

≤10ppm

≤10ppm

≤15ppm

Iron

≤10ppm

≤10ppm

≤30ppm

Sulfate

≤300ppm

≤0.020%

≤0.03%

Arsenic

/

≤1ppm

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Ammonium

≤200ppm

≤0.02%

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Other amino acids

/

Conforms

Conforms

Pyrongen

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Conforms

/

Specific Rotation

+14.0 °to +16.0°

﹢14.4°~﹢15.5°

﹢14.0°~﹢15.6°

 


 

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Shijiazhuang Jirong Pharmaceutical Co., Ltd.

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