Product Name:L- Aspartic acid
CAS# : 6899-3-2
Molecular Formula:C4H7NO4
Molecular Weight: 133.1
Reference standard: (GB29938-2013)
Item
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Standard
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Analysis data
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Appearance
|
White crystals or crystalline powder
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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
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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
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The product is accordance with standard.
|
|