What regulatory guidelines apply to oxotungsten (CAS: 12037-58-0)?

Oxotungsten (CAS: 12037-58-0) is classified under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) as a hazardous substance. It is subject to reporting and handling requirements under the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation in the European Union. In the United States, the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) may have specific regulations regarding its use, storage, and disposal. It is important to consult the Material Safety Data Sheet (MSDS) and local regulations for detailed guidance.