Chemical Name

N-Acetyl-L-Cysteine

Molecular Structure

Molecular Formula

C5H9NO3S

Molecular Weight

163.19

Cas No

[616-91-1]

Characteristics

White crystals or crystalline powder , strongly acid taste

Appearance

White crystals or crystalline powder

White crystals or crystalline powder

Assay

98.5~101.0%

98.5~101.0%

PH

2.0~2.8

2.0~2.8

Specific rotation[a]D20°

+5.5°～+7.0°

+5.5°～+7.0°

State of solution

≥98.0%

Chloride(Cl)

≤0.04%

Ammonium(NH 4 )

≤0.02%

Iron(Fe)

≤20PPm

Heavy metals(Pb)

≤10PPm

≤10PPm

Arsenic(As2O3)

≤1PPm

Other amino acids

Conforms

Loss on drying

≤0.5%

≤1%

Residue on ignition

≤0.20%

≤0.5%

Melting point

106~110°

Organic volatile impurities

Meet the requirements