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L-半胱氨酸碱
产品详细介绍

L-Cysteine Base

CAS NO52-90-4

Chemical Name

L-Cysteine Base

Molecular Structure

1.jpg

Molecular Formula

C3H7NO2S

Molecular Weight

121.15

Characteristics

White crystalline powder,tasteless,easily soluble in water but insoluble in alcohol and ether

Packing

25/drum25/carton

Quality  Standard

AJI92/USP28/EP5/FCCIV

Specification

Specific rotation[a]D20°          

+8.3°+9.5°         

State of solution

≥95.0%

Heavy metals(Pb)  

≤10PPm

Residue on ignition                           

≤0.1%  

Iron(Fe)

≤10PPm

Loss on drying                              

≤0.5%  

Other amino acids                          

Conforms  

Arsenic(As2O3) 

≤1PPm 

Chloride(CI) 

≤0.04%

Ammonium(NH4)

≤0.02%

Sulfate(SO4)    

≤0.03%

Assay                                  

98.0101.0%             

PH

4.55.5

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