N-Acetyl-L-cysteine

Products Name:	N-Acetyl-L-cysteine
Item No:	269908
Update time:	2005-6-11 10:57:00
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N-Acetyl-L-cysteine Description

White crystal or crystalline powder; strongly acid taste. Freely soluble in water, soluble in ethanol, practically insoluble in ether. Solubility (H2O,g/100g); 17(20?), 80 (40?),260(60?)

Specific rotation: +26.3 to +27.0
State of solution: clear and colorless
Transmittance: not less than 98.0%
Chloride: not more than 0.04%
Ammonium (NH14): not more than 0.02%
Sulfate: not more than 0.03%
Iron (Fe): not more than 20ppm
Heavy metals: not more than 10ppm
Arsenic: not more than 1ppm
Other amino acids: Chromatographically not detectable
Loss on drying: not more than 0.50%
Residue on ignition: not more than 0.20%
Assay: 98.5 to 101.0%
PH: 2.0 to 3.5
Melting point: 106 to 110

It is a kind of strongly non-stimulus solvent of phlegm, it can reduce phlegm, cure bronchitis, is used in cosmetics and permanent wave hair agent.

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