L-Asparagine monohydrate

CAS No.: 5794-13-8
Molecular formular: C₄H₁₀N₂O₄
Molecular weight: 150.13

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L-Asparagine Monohydrate	AJI97	USP2025	EP11	JP18
Appearance	White crystals or crystalline powder	White crystals or a crystalline powder	White or almost white, crystalline powder or colourless crystals	/
ldentification	Conform	Conform	IR:Conform to CRS Spectrum	/
ldentification(LC)	/	Conform	/	/
State of solution (Transmittance)	Clear and colorless, ≥98.0%	/	/	/
Specific rotation	+34.3°~ +36.5°	+33.0º ~ +36.5º	+33.7° ~ +36.0° (dried substance)	/
Chloride	≤0.020%	/	≤200ppm	/
Sulfate	≤0.020%	/	≤200ppm	/
Ammonium	≤0.10%	/	≤0.1%	/
Iron	≤10ppm	/	≤10ppm	/
Heavy metals	≤10ppm	/	/	/
Arsenic	≤1ppm	/	/	/
Other amino acids	Conform	/	/	/
Loss on drying	11.50%~12.50%	11.5% ~ 12.5%	10.5% ~ 12.5%	/
Residue on ignition	≤0.10%	≤0.1%	≤0.1%	/
pH	4.4 ~ 6.4	/	4.0 ~ 6.0	/
Assay	99.0% ~ 101.0%	95.5% ~ 102.0% (on the dried basis)	99.0% ~ 101.0% (dried substance)	/
Organic Impurities/ Related substances	/	Asparagine related compound A: ≤1.0%	Impurity A: ≤ 0.5%	/
		Aspartic acid: ≤1.0%	Impurity C: ≤ 0.1%	/
		Each individual unidentified impurity: ≤0.5%	Unspecified impurities: each impurity: ≤ 0.05%	/
		Total impurities: ≤3.0%	Total: ≤ 0.8%	/
Appearance of solution	/	/	Solution S is clear and colourless	/
Lead	/	≤5ppm	/	/
TAMC	/	≤10³cfu/g	/	/
TYMC	/	≤10²cfu/g	/	/