Product: L-Leucine                   CAS NO.: 61-90-5

Lot NO.: 100605                       Date: June 08, 2010

Item

Specification

Result

Description

white crystals or crystalline powder

Crystalline powder

PH

5.5~6.5

5.8

Specific Rotation

+14.9°~+16.0°

+15.3°

State of Solution

(Transmittance T430)

≥98.0%

98.6%

Chloride(Cl)

≤ 0.02%

< 0.02%

Ammonium(NH4)

≤ 0.02%

< 0.02%

Sulfate

≤ 0.02%

< 0.02%

Iron(Fe)

≤ 10ppm

<10ppm

Heavy Metals(Pb)

≤ 10ppm

<10ppm

Arsenic(AS2O3)

≤ 1ppm

<1ppm

Other Amino Acids

not detectable

Conforms

Loss on drying

≤ 0.20%

0.1%

Residue on ignition

(sulfated)

≤ 0.10%

0.03%

Assay

98.5% to 100.5%

99.5%