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                      Putrescine Dihydrochloride
                      Product name: Putrescine Dihydrochloride
                      Molecular formula: C4H12N2·2HCL
                      CAS NO.: 333-93-7
                      Package: 25kg/drum
                      Batch No.: P20060521
                      CERTIFICATE OF ANALYSIS
                      Items Specification Results
                      Appearance White needles crystalline Pass
                      Assay(Cl)% ≥98.5% 99.7%
                      Solubility(1.0g in 50ml H2O) Clear Pass
                      Loss on drying % ≤0.5% 0.2%
                      Residue on ignition% ≤0.2 0.18
                      Sulfate(SO4)% ≤0.020% 0.010%
                      Arsenic(AS2O3)ppm ≤10 Pass
                      Heavy metals(Pb)ppm ≤10 Pass
                      Storage & Shelf life 2 years in original sealed container, cool, dry place.
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