White or almost white crystalline powder, without odour, but bitter taste; the color will grow darker upon exposure to light.

Specifications and properties:

           characteristics:               white crystallization or crystalline powder

           water:                            6.0% Max

           PH:                                 9.6-10.5

           residue on ignition:        0.1% Max

           heavy metals:                20ppm Max

           content:                         98.0% Min

Uses: Sulfanilamide medicine, used in senstive organism infection, pig parasitized arch insect and chicken parasitized leucocyte.

Store:  Seal it away from light.