Niacin/nicotinamide could be used as feed/human nutrition, not only booth the growth but also strengthen the immunity. 

Characteristics:colorless crystals or a white crystalline powder

Applications:uses in pharma,food,feed and chemical products

According to standard:USP29\BP2000

 

       ITEMS                                        SPECIFICATION 

      Characteristics                       white crystalline powder 

      Identification                           Complies

      Melting range                          128.0~131.0

      Loss on drying                         less than 0.5% 

      Residue on ignition                 less than 0.1% 

      Heavy metals                            0.003%  

      Readily carbonizable               less than Matching Fluid A 

      Organic volatile impurities      Complies  

      Residual solvents                     Complies   

       Assay                                           98.5%~101.5%  

       Shelf life:24 months