[{"from": "human", "value": "What can you tell me about this molecule? [O-1][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ba+2]"}, {"from": "gpt", "value": "The molecule is a yellow sand like powder with the formula BaCrO4, and a chemical compound of barium and hexavalent chromium. The compound is a known oxidizing agent and produces a green flame when heated, a result of the barium ions. It is used in pyrotechnic compositions, pigments, safety matches, metal primers, ignition control devices, explosive initiators, and as a corrosion inhibitor. Barium is a metallic alkaline earth metal with the symbol Ba, and atomic number 56. It never occurs in nature in its pure form due to its reactivity with air, but combines with other chemicals such as sulfur or carbon and oxygen to form barium compounds that may be found as minerals. Hexavalent chromium refers to chemical compounds that contain the element chromium in the +6 oxidation state. Chromium(VI) is more toxic than other oxidation states of the chromium atom because of its greater ability to enter cells and higher redox potential. (L16, L19, L214, L215)"}]