Product: L-Serine                   CAS NO.: 56-45-1

Lot NO.: 100513                         Date:May. 10, 2010

Item

Specification

Result

Description

white crystals or crystalline powder

Conforms

Identification

Concordant with the reference spectrum

Conforms

Specific Rotation

+14.0°~+15.6°

+14.5°

State of Solution

(Transmittance T430)

Clear & colorless

≥98.0%

99.2%

Chloride(Cl)

≤ 0.02%

< 0.02%

Sulfate(SO4)

≤ 0.02%

< 0.02%

Iron(Fe)

≤ 10ppm

<10ppm

Heavy Metals(Pb)

≤ 10ppm

<10ppm

Other Amino Acids

Chromatoraphically not detectable

Conforms

Loss on drying

≤ 0.2%

0.15%

Residue on ignition

(sulfated)

≤ 0.1%

0.03%

Assay

98.5% to 101.0%

100.2%