Name of product

L-leucine

Certificate no.

0100401

Batch no.

Quality specification

USP24

Quantity

1000kgs

Date of test

Producing date

Expiry date

Item

Standard

Analysis date

Description

White crystals or crystalline powders

Qualified

Specific rotation[a]D20°

+14.9°to +17.3°

+15.0°

Assay

98.5% to 101.0%

99.0%

Sulfate(SO4)

Not more than 0.030%

<0.030%

Heavy metal(pb)

Not more than 15ppm

<15ppm

Iron(Fe)

Not more than 30ppm

8ppm

Arsenic(as2o3)

Not more than 1.5ppm

<1.5ppm

Loss on drying

Not more than 0.20%

0.15%

Residue on ignition

Not more than 0.30%

0.10%

Other amino acids

Chromatographically not detectable

Conforms

Chloride(CL-)

Not more than 0.05%

<0.05%

PH

5.5 to 7.0

6.0

Conclusion

It conforms to USP24