1. Properties: Acetylacetone is a colorless or slightly yellow flammable liquid. Boiling point is 135-137℃, flash point is 34℃, melting point is -23℃. The relative density is 0.976, and the refractive index is n20D1.4512. 1g of acetylacetone is soluble in 8g of water, and is miscible with ethanol, benzene, chloroform, ether, acetone and glacial acetic acid, and decomposes into acetone and acetic acid in lye. It is easy to cause combustion when exposed to high heat, open flames and strong oxidants. It is unstable in water and is easily hydrolyzed into acetic acid and acetone.
2. Moderate toxicity. It can irritate the skin and mucous membranes. When the human body stays for a long time under (150~300)*10-6, it can be harmed. Symptoms such as headache, nausea, vomiting, dizziness, and dullness will appear, but it will be affected when the concentration is 75*10-6. No danger. The production should adopt vacuum sealing device. Ventilation should be strengthened at the operation site to minimize running, leaking, dripping and leakage. In case of poisoning, leave the scene as soon as possible and breathe fresh air. Operators should wear protective gear and conduct regular occupational disease inspections.
