RPI N20060-250.0 Nicotinamide, Vitamin PP, 250g

What the brand says

Appearance: White or almost white crystalline powder. Assay: 99.0 - 101.5 %. Identification A (IR): Conforms. Identification B UV (Ratio:A245/A262): 0.63 - 0.67. Heavy Metals: = 30 mg/kg. Lead: = 2.0 ppm. Loss on Drying: = 0.5 %. Melting Range: 128 - 131 °C. Readily Substances: Conforms. Residue on Ignition: = 0.1 %. Total Viable Count: = 1000 cu/g. Yeast and Mold : = 100 cu/g. E.coli and Salmonella: Absent. Staphylococcus Aurous: Absent.