Sichuan Tongsheng Amino acid Co., Ltd
L-Pyroglutamic acid
L-Theanine
L-Prolinamide

Products
L-Aspartic acid

Product Name:L- Aspartic acid                         

CAS# : 6899-3-2
Molecular Formula:C4H7NO4                              

Molecular Weight: 133.1
Reference standard:  (GB29938-2013)

Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

Conforms

Specific rotation

+24.8°~+25.8°

﹢25.28°

transmittance

Not less than 98.0%

98.2%

Chloride (Cl)

Not more than 0.02%

<0.02%

Sulfate (SO4)

Not more than 0.02%

<0.02%

Iron(Fe)

Not more than 10ppm

<10ppm

Heavy metal (Pb)

Not more than 10ppm

<10ppm

Arsenic(As)

Not more than 1ppm

<1ppm

Loss on drying

Not more than 0.20%

0.07%

Residue on ignition(sulfated)

Not more than 0.10%

0.08%

Assay

98.5%~101.0%

98.83%

pH

2.5~3.5

2.93

Conclusion

The product is accordance with standard.


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