供应 D-苏氨酸632-20-2

 

 Items

 

 

 Standard

 

 

 Analysis data

 

 

 Appearance

 

 

 White

 to off-white crystalline powder

 

 

 conforms

 

 

 Specific Rotation [а]D20

 （C=6 in H2O）

 

 

 +27.6 to +29.0 Degree

 

 

 +27.75

 

 

 Transmittance

 

 

 Not less than 95%

 

 

 99.%

 

 

 Heavy Metals (Pb)

 

 

 Not more than 10PPM

 

 

 conforms

 

 

 Arsenic(As2O3)

 

 

 Not more than 2PPM

 

 

 conforms

 

 

 Loss on Drying

 

 

 Not more than 0.30%

 

 

 0.19%

 

 

 Residue on Ignition (Sulfated)

 

 

 Not more than 0.20%

 

 

 0.08

 

 

 Assay

 

 

 Not less than 98.0%

 

 

 99.0%