copper oxide black

1.Electroplating grade

CuO----------98.5%min 

 Zn------------200ppm max

 Fe------------100ppm max

 Pb------------60ppm max                           

 Cl-------------100ppm max

Acid-insoluble ------0.01% max 

2.Electronic Grade

CuO----------98%min

 Hydrochloric acid insoluble-----------0.2%max

 Water soluble matter---------------0.1%max

 Cl-------------0.2%max

 So-------------0.2%max

 Cd-------------5ppm max

 Pb-------------100ppm max     

 Hg------------2ppm max

 Cr VI---------2ppm max 

3,Industrial Grade

CuO----------98%min

 So-----------0.2% max               

 Cl------------0.2%max

Water soluble matter------------0.1%max

Hydrochloric acid insoluble-----------0.2%max

CuO---Copper Oxide Black 98%min-------FREE SAMPLE