The Erbium, with the cas registry number 7440-52-0, is a kind of grey powder, with the product categories including Catalysis and Inorganic Chemistry; Chemical Synthesis; Erbium; ErbiumMetal and Ceramic Science; Metals.

The physical properties of this chemical are below: (1)#H bond acceptors: 0; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 0; (5)Exact Mass: 165.93029; (6)MonoIsotopic Mass: 165.93029; (7)Heavy Atom Count: 1; (8)Covalently-Bonded Unit Count: 1

When you are using this chemical, you should be very cautious. For being a kind of highly flammable which may catch fire in contact with air, it only needs brief contact with an ignition source, and it has a very low flash point or evolve highly flammable gases in contact with water. Therefore, you should be careful while using. In case of fire use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add - Never use water).

Additionally, you could convert the following datas into the molecular structure:
(1)Canonical SMILES: [Er]
(2)InChI: InChI=1S/Er
(3)InChIKey: UYAHIZSMUZPPFV-UHFFFAOYSA-N