1. The principle of measuring oxygen content with copper powder is based on the chemical reaction between copper and oxygen. When copper powder is placed in air, it reacts with oxygen to produce black copper oxide (CuO), which can be used to determine the content of oxygen.
2. The copper powder used in this method must be newly prepared and kept dry and clean. Copper powder can be prepared by cutting copper rod into small particles, which can maintain the purity and reactivity of copper.
I. Copper powder
Main uses: widely used in powder metallurgy, carbon products, electronic materials, metal coatings, chemical catalysts, filters, radiator pipes and other electromechanical parts and electronic aviation fields.
Second, the chemical properties
Copper can only be heated into CuO in alcohol lamp, and it is difficult to be oxidized in dry air, but it is easy to be oxidized into basic copper carbonate (2Cu+O2+H2O+CO2==Cu2(OH)2CO3) in humid air. Compared with copper sheet, copper powder is easier to be oxidized because its surface is in more contact with air.
Three. Transport information
The package shall be intact during shipment and the loading shall be safe. Ensure that the container will not leak, collapse, fall or be damaged during transportation. Do not mix with oxidant, acid and halogen. Exposure, rain and high temperature should be prevented during transportation.
Fourth, emergency treatment.
Isolate the leaking and polluted areas and restrict access. Cut off the fire. It is recommended that emergency personnel wear dust masks (full face masks) and ordinary work clothes. Collect with a clean shovel in a dry, clean and covered container. If there is a large amount of leakage, collect and recycle it.
Verb (abbreviation for verb) stores the precautions.
Store in a cool and ventilated warehouse. Stay away from fire and heat sources. Should be stored separately from oxidant, acid and halogen, and should not be mixed. Equipped with corresponding varieties and quantities of fire fighting equipment. The storage area should be equipped with suitable materials to control leakage.
Six, the operation matters needing attention
1. Operators must be specially trained and strictly abide by the operating procedures. Operators are advised to wear self-priming filter dust mask and chemical safety glasses. Stay away from kindling and heat sources, and smoking is strictly prohibited in the workplace.
2. Use explosion-proof ventilation system and equipment. Avoid contact with oxidants, acids and halogens. Handle with care when handling to prevent the package from being damaged. Equipped with corresponding varieties and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances behind.