Characters:Black or brownish black amorphous crystalline powder,monoclinic crystal, specific wt.: 6.315,m.p.: 14460C, insoluble
Characters:Black or brownish black amorphous crystalline powder,monoclinic crystal, specific wt.: 6.315,m.p.: 14460C, insoluble in water and ethanol, soluble in diluted acid, ammonia water, ammonium chloride, sodium hydroxide and potassuim cyanide.
Specifications:
Copper Oxide | A.P. | C.P. | Technical first grade | Technical second grade |
Item | Spec. | Spec. | Spec. | Spec. |
Assay(CuO) % | ≥99.0 | ≥98.0 | ≥98.0 | ≥97.0 |
Insol. in Hcl % | ≤0.02 | ≤0.05 | ≤0.2 | ≤0.2 |
Chlorides(Cl)% | ≤0.003 | ≤0.005 | ≤0.10 | ≤0.10 |
Sulfur compound(SO4)% | ≤0.01 | ≤0.05 | ≤0.10 | ≤0.10 |
Nitrogen compound(N) % | ≤0.002 | ≤0.005 | —— | —— |
Carbon compound | ≤0.025 | ≤0.10 | —— | —— |
Fe% | ≤0.01 | ≤0.04 | —— | —— |
Cuprous oxide(Cu2O)% | ≤0.05 | ≤0.10 | —— | —— |
Non-precipitate in sulfureted hydrogen % | ≤0.2 | ≤0.5 | —— | —— |
Water insoluble% | —— | —— | ≤0.10 | ≤0.10 |
Fineness(100-mesh sieve residue) % | —— | —— | ≤2 | ≤5 |
Copper Oxide | Export AR grade | Electro-plating Copper Oxide | Electronic grade | Air bag grade |
Item | Spec. | Spec. | Spec. | Spec. |
Assay(CuO) % | ≥98.0 | ≥98.5 | ≥98 | ≥98 |
Insol. in Hcl % | ≤0.02 | ≤0.01 | ≤0.10 | ≤0.2 |
Chlorides(Cl) % | ≤0.005 | ≤0.06 | ≤0.08 | Moisture≤0.3 |
Sulfur compound(SO4)% | ≤0.02 | ≤0.01 | ≤0.08 | PH5.5-7.5 |
Zn% | —— | ≤0.02 | —— | —— |
Pb% | ≤0.02 | ≤0.01 | ≤0.010 | —— |
Fe% | ≤0.05 | ≤0.05 | —— | —— |
Cd% | —— | —— | ≤0.0005 | —— |
Hg% | —— | —— | ≤0.0002 | —— |
C% | ≤0.05 | —— | —— | —— |
N% | ≤0.005 | —— | —— | —— |
As% | ≤0.0002 | —— | —— | —— |
Ca% | ≤0.02 | —— | —— | —— |
Cuprous oxide(Cu2O)% | ≤0.05 | —— | —— | ≤0.2 |
K% | ≤0.02 | —— | —— | —— |
Na% | ≤0.02 | —— | —— | —— |
Sexavalence Cr % | —— | —— | ≤0.0002 | —— |
Water insoluble% | ≤0.05 | ≤0.10 | ≤0.10 | D501.5 |
Fineness(125-mesh sieve residue) % | —— | ≤0.1 | 325-mesh sieve residue≤0.3 | 100 meshes ≤2 |
Product Usage: It is used for firework, bactericides, glass, artificial rain materials, ceramics, catalyst, rayon etc.Packaging:In 25Kg/woven bag lined with double-layer plastic bag or iron drum, closed tightly.Storage Precautions:stored in dry and draughty warehouse, prevent dampness; isolated from strong acids or food; fight fire with water. |
Copper Oxide
