N-Acetyl-L-Cysteine USP-23

Tests Specifications
Appearance White Crystalline Powder
Identification Same as R.S.
Assay 98.0 ~ 102.0%
Melting Range 104 ~ 110'C
Specific Rotation [a]20D +21.0 ~ +27.0'
pH 2.0 ~ 2.8
Loss on Drying Less than 1.0%
Residue on Ignition Less than 0.5%
Heavy Metals (as Pb) Less than 10 ppm

Organic Volatile Impurity

   Benzene

   Chloroform

   1,4-Dioxane

   Methylene Chloride

   Trichloroethylene

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Less than 100 ppm

Less than  50 ppm

Less than 100 ppm

Less than 500 ppm

Less than 100 ppm