L-Serine

Analysis Item

Specification

Result

Description

White crystals or crystalline powder

Conforms

Identification (IR)

Concordant with the reference spectrum

Conforms

Assay

98.5% – 101.5%

100.1%

Specific rotation [α]D25

+14.0° ~ +15.6°

+15.1°

Chloride (Cl)

<0.05%

<0.05%

Sulfate (SO4)

<0.03%

<0.03%

Iron (Fe)

<30 ppm

<30 ppm

Insoluble foreign matter in amino acids

No fibers longer than 5 mm are present, total weight of any foreign matter ≤ NMT 5 mg/100 g of sample

Conforms

Related Compounds

Individual impurity <0.5%, Total impurities ≤ 2.0%

Conforms

Loss on Drying

<0.20%

0.12%

Residue on Ignition

<0.10%

0.02%

Analysis Item

Specification

Result

Heavy metals (Pb)

<15 ppm

<15 ppm

Arsenic

<1.5 ppm

<1.5 ppm

Lead

<5 ppm

<5 ppm

Analysis Item

Specification

Result

Total Plate Count

≤1000 CFU/g

Conforms

Yeast and Molds

≤100 CFU/g

Conforms