N-Acetyl-L-Cysteine

*** CERTIFICATE OF ANALYSIS ***
 

Product Name: N-Acetyl-L-Cysteine	Quantity: 500kgs	Batch No: NA210328429
Product date: 2021.03.28	Expiry date: 2023.03.27	Pakage: 25kg/drum
ITEM	SPECIFICATIONS	TEST RESULTS
Appearance	White crystals or crystalline powder	White crystalline powder
Assay, %	98.5~101.0	99.3
Identification	Infrared absorption	Conforms
pH value	2.0~2.8	2.21
Specific optical rotation[a]D20°	+21°~+27°	+25.4°
Melting point, ºC	106~110	107~109
Transmittance, %	≥98.0%	98.9%
Loss on drying, %	≤0.5	0.15
Residue on ignition, %	≤0.2	0.09
Chloride, %	≤0.04	<0.04
Sulfate, %	≤0.03	<0.03
Ammonium, %	≤0.02	<0.02
Heavy metals (as Pb), %	≤0.001	<0.001
Iron (Fe), %	≤0.002	<0.002
Arsenic (As2O3), %	≤0.0001	<0.0001
Other amino acids	Not detectable	Not detectable
Conclusion: The test result of the above mentioned product meets standard.

 
 

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