1. Chemical name: iron oxide black

2. Molecular formula: Fe3O4

3. Molecular weight: 231.533

4. CAS: 1317-61-9

5. Properties: insoluble in water, alkaline solution and organic solvents such as ethanol and ether. Natural ferric oxide is insoluble in acid solution, and is easily oxidized to iron oxide (Fe2O3) in the air in a humid state.

6. Uses: used as pigments and polishing agents, and can also be used in the manufacture of audio tapes and telecommunication equipment.

Seven, packaging: lined with polyethylene plastic bags, outer plastic woven bags, 25Kg per bag.

8. Storage and transportation: It should be stored in a dry, ventilated and clean warehouse, lightly packed to prevent moisture and heat, and rain and moisture during transportation