The Antimony triselenide is an inorganic chemical compound with the formula Sb₂Se₃. With the CAS registry number 1315-05-5, it is also named as 2,4,5-triselena-1,3-distibabicyclo[1.1.1]pentane. The product's categories are chalcogenides; materials science; metal and ceramic science. It is gray lump which is avoided to contact with oxide, water and acid. The other registry numbers are 12656-50-7, 264921-16-6, 37256-15-8, 37256-16-9, 72924-94-8 and 73508-21-1. The material exists as the sulfosalt mineral antimonselite, which crystallizes in an orthorhombic space group. In addition, it is slightly hazardous to water, so people should not release the material to the environment without proper governmental permits. Furthermore, Antimony triselenide must be sealed in the container and the container should placed in the cool and dry aera.

The other characteristics of this product can be summarized as: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 0; (3)Rotatable Bond Count: 0; (4)Exact Mass: 481.558387; (5)MonoIsotopic Mass: 481.557201; (6)Heavy Atom Count: 5; (7)Complexity: 4.9; (8)Covalently-Bonded Unit Count: 5.

Preparation of Antimony triselenide: It may be formed by the reaction of antimony with selenium.

When you are using this chemical, please be cautious about it as the following:
It is toxic by inhalation, in contact with skin and if swallowed. And it is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

People can use the following data to convert to the molecule structure.
1. SMILES: [Se]1[Sb]2[Se][Sb]1[Se]2;
2. InChI: InChI=1/2Sb.3Se/rSb2Se3/c3-1-4-2(3)5-1.