USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
item |
standard i |
standard ii |
cuo, % ≥ |
99 |
98 |
muriatic acid insoluble substance ≤ ,% |
0.05 |
0.20 |
cl , % ≤ |
0.02 |
0.20 |
so4 , % ≤ |
0.05 |
0.20 |
water-insoluble , % ≤ |
0.01 |
0.10 |
residue on sieve (150um ) ≤ ,% |
|
0.10 |
residue on sieve (300um ) ,≤ % |
0.10 |
|
cupric oxide is a kind of +2 valence oxide of copper , black matter, display slightly amphoteric and slightly hygroscopicity, the formula is cuo, relative molecular mass is 79.545 ,density is 6.3~6.9g/cm3, melting point is 1326ºc. it can soluble in acid and solution of ammonium chloride and potassium cyanide, insoluble in water and ethanol , dissolve slowly in ammonia water and react with alkaline solutions.
project | indicator |
copper oxide(cuo) | ≥98% |
sulphate(so42-) | ≤0.1% |
chlorine(cl-) | ≤0.2% |
hydrotrope | ≤0.1% |
rail(fe) | ≤0.3% |
lead(pb) | ≤50ppm |
cadmium(cd) | ≤5ppm |
chrom(cr vl) | nd |
mercury(hg) | nd |