供应 DL-酪氨酸556-03-6

 

 Item

 

 

 Standard

 

 

 Analysis data

 

 

 State of solution

 (Transmittance)

 

 

 Not less than 95.0%

 

 

 comforms

 

 

 Chloride (Cl)

 

 

 Not more than0.10%

 

 

 0.01%

 

 

 Heavy metal(Pb)

 

 

 Not more than 10ppm

 

 

 <10ppm

 

 

 Arsenic(As2O3)

 

 

 Not more than 2ppm

 

 

 <2ppm

 

 

 Iron (Fe)

 

 

 Not more than 10ppm

 

 

 7ppm

 

 

 Other amino acids

 

 

 Chromatographically

 not  detectable

 

 

 comforms

 

 

 Loss on drying

 

 

 Not more than 0.30%

 

 

 0.3%

 

 

 Residue on ignition(sulfated)

 

 

 Not more than 0.30%

 

 

 0.15%

 

 

 Assay

 

 

 98.0 to101.0%

 

 

 99.2%