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HOME ->
PRODUCTS -> N-ACETYL-L-CYSTEINE USP 23
N-ACETYL-L-CYSTEINE
SPECIFICATIONS
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ITEMS
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SPECIFICATIONS
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Appearance
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White crystalline powder
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Assay
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98.0
– 102.0%
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Specific Rotation
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+21.0 ~ +27.0
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State of Solution
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98.0% Min.
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Chloride (Cl)
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0.04% Max.
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Ammonium (NH4)
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0.02% Max.
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Sulfate (SO4)
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0.030% Max.
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Iron
(Fe)
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20
ppm Max.
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Heavy Metals
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10
ppm Max.
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L-Cystine
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0.5%
Max.
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L-Cysteine
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0.5%
Max.
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N,N-Diacetyl-L-Cysteine
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0.5%Max.
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N,S-Diacetyl-L-Cysteine
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0.5%
Max.
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Other Impurities
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0.5%
Max.
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Total Impurities
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0.5%
Max.
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Organic Volatile Impurities
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As
per USP
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Loss
on Drying
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1.0%
Max.
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Residue on Ignition
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0.5%
Max.
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pH
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2.0
– 2.8
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Lead
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3.7
ppm Max
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Microbiological:
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Total Plate Count
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1,000 CFU/g Max.
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Yeast/Mold
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100
CFU/g Max.
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E.Coli
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Negative
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Salmonella
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Negative
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