EDTA disodium a good compound. It has six coordinated atoms, forming a complex called chelate. EDTA is often used in coordinated titration. It usually determines the content of metal ions. EDTA plays an important role in dyeing, food, medicine and other industries. It is mainly used as complexing agent.
Characteristics and precautions of EDTA disodium
1. EDTA has a wide range of coordination properties and can form stable chelates with almost all metal ions.
Advantages: it provides the possibility of multiple elements (better than acid base and precipitation method).
Disadvantages: easy interference between multiple components – selectivity.
2. Compared with most people, the formation of EDTA and m-edta is 1:1.
3. Most chelates have electric charge, so they can dissolve in water and react quickly.
Toxicity protection: the toxicity of this product is low. For mice, the LD50 is 2000 mg / kg. For other toxic and protective content, see EDTA.
Packing: packed in cartons or gunny bags, in double plastic bags, 80 kg each.
Physical and chemical properties: white crystalline powder. Low toxicity, soluble in water, pH value of 5% aqueous solution is 4. 6。 acidic. It is difficult to dissolve in alcohol.
Precautions for operation of EDTA disodium
Close operation and strengthen ventilation. Operators must be specially trained and strictly abide by the operation rules. It is suggested that the operators should wear self-priming respirator, chemical protective glasses, anti toxin penetrating work clothes and rubber gloves. Keep away from fire and heat sources. Smoking is prohibited in the workplace. Use explosion-proof ventilation system and equipment. Avoid dust. Avoid contact with oxidants. During handling, light load and unloading should be adopted to prevent damage to packaging and containers. Fire fighting equipment and leakage emergency treatment equipment of corresponding variety and quantity shall be provided. Empty containers can be harmful.
Precautions for storage of EDTA disodium
Store in a cool, ventilated warehouse. Keep away from fire and heat. Storage should be separated from oxidants. Equipped with the corresponding variety and quantity of fire-fighting equipment. The storage area shall be equipped with proper shelter and leakage materials.
Precautions for transportation of EDTA disodium
Packing should be completed at the time of shipment and loading should be safe. Ensure that the container will not leak, fall, fall and damage during transportation. It is forbidden to mix with oxidants, food chemicals, etc., and avoid contact, rainfall and high temperature during transportation. The vehicle should be thoroughly carried out.