L-Serine

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Product Name: L-Serine
Batch No.: LK******
Quality: AJI97
Shelf Life: 2years

Tests	Limits	Test results
Description	White crystals or crystalline powder	Crystalline powder
Identification (IR)	Concordant with the reference spectrum	Concordant with the reference spectrum
Specific rotation	14.4 ° ~ 15.5 °	14.8 °
Assay	99.0 %~101.0 %	99.6 %
State of solution (Transmittance T 430 )	≥98.0%	99. 5 %
PH	5.2 ~6.2	5.9
Loss on drying	≤0.20%	0.13 %
Residue on ignition	≤0.10%	0.05%
Chloride(Cl)	≤0.02%	<0.02%
Sulfate(SO 4 )	≤0.02%	<0.02%
Ammonium(NH 4 )	≤0.02 %	<0.02 %
Iron(Fe)	≤10ppm	<10ppm
Heavy metals(Pb)	≤10ppm	<10ppm
Arsenic(As)	≤1ppm	<1ppm
Other amino acids	≤ 0.5%	＜ 0.5%

Product Name: L-Serine
Batch No.: LK******
Quality: USP37
Shelf Life: 2years

Tests	Limits	Test results
Description	White crystals or crystalline powder	crystalline powder
Identification (IR)	Concordant with the reference spectrum	Concordant with the reference spectrum
Specific rotation	14.0 ° ~ 15.6 °	14.9 °
Assay	98.5 ~ 101.5%	99.5%
Loss on drying	≤0.20%	0. 12 %
Residue on ig nition	≤0.10%	0.0 8 %
Chloride(Cl)	≤0.05%	<0.05%
Sulfate(SO 4 )	≤0.03%	<0.03%
Iron(Fe)	≤30ppm	<30ppm
Heavy metals(Pb)	≤15ppm	<15ppm
Chromatographic purity	≤ 0.5 % of any individual impurity ≤ 2.0% of total impurities	＜ 0.5% of any individual impurity ＜ 2.0% of total impurities
Organic volatile impurities	M eets the requirements	M eets the requirements