L-Isoleucine CAS:73-32-5

Items

Specifications

Results

Test Method

Appearance

White crystals or crystalline powder

Conforms

Visual

Identification

Infrared Absorption

Conforms

USP<197K>

Specific rotation [a]p25

+38.9°~+41.8°

+40.2°

USP<781S>

pH

5.5~7.0

6.0

USP<791>

Loss on drying

≤0.3%

0.20%

USP<731>

Residue on ignition

≤0.3%

0.08%

USP<281>

Chloride(CI)

≤0.05%

<0.05%

USP<221>

Sulfate(SO4)

≤0.03%

<0.03%

USP<221>

lron(Fe)

≤0.003%

<0.003%

USP<241>

Heavy metals(Pb)

≤0.0015%

<0.0015%

USP<231>

Organic volatile impurities

Meets the requirements

Conforms

USP<467>

Assay

98.5~101.5%

99.5%

Titration