L-

Product Name: L-Threonine

25kgs

Quantity:   

20080205

Batch No: 

2008.02.05

Producing date:

2008.02.07

Sampling date:

20010.02.04

Expiry date: two years

USP24

Reference standard: USP24

         Item                  

       Specifications

Results

Description

White flake crystalline powder

White flake crystalline powder

[α]²⁰_D

Specific optical rotation

-26.7⁰~-29.1⁰

-28.5⁰

               ≥

Assay             min

98.5~101.5%

99.59%

Heavy metals ,%    max

≤0.0015%

0.0010%

,%        

Loss on drying,%    max

≤0.20%

0.17%

(Cl),%       ≤

Chloride as Cl,%     max

            0.05%

             0.033%

pH

pH value

5.06.5

6.0

  ,%     

Residue on ignition  max       

≤0.4%

0.025%

                     ≤Iron                  max

            ≤0.003%

             0.002%

(SO₄),%      ≤

Sulfate(as SO₄),%       max

             ≤0.03%

            0.013%

USP24.

Conclusion: This product conforms to USP24 standard.