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L-Isoleucine

CAS No. : 73-32-5
Molecular formular: C6H13NO2
Molecular weight: 131.17
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Product description
Parameters

L-Isoleucine

AJI97

USP40

EP6.0

Description

White crystals or crystalline powder

/

White or almost white, crystalline powder or flakes

Identification

Conform

Conform

Conform

Solubility

/

/

Slightly Sparingly Soluble in water, Slightly soluble in alcohol.It dissolves in dilute mineral acids and in dilute solutions of alkali hydroxides.

Appearance of solution

/

/

Clarity of solution:5% water solution should be clear

 

 

 

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

Assay

98.5%~101.0%

98.5%~101.5%

98.5%~101.0%

pH

5.5~6.5

5.5~7.0

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Transmittance

≥98.0%

---

/

Loss on drying

≤0.20%

≤0.3%

≤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%

≤300ppm

Ninhydrin-positive substances (TLC)

/

/

Conform

Arsenic

≤1ppm

/

/

Ammonium

≤0.02%

/

≤200ppm

Other amino acids

Conform

/

/

Pyrogen

Conform

/

/

Related compounds

/

Conform

/

Specific Rotation

﹢39.5°~﹢41.5°

﹢38.9°~﹢41.8°

+40.0°~ +43.0°

 


 

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