BAY-29952 is a broad spectrum insecticide.Phosphonothioic acid, methyl-, O-ethyl O-(4-(methylthio)phenyl) ester, Hazardous Substance Fact Sheet, New Jersey Department of Health and Senior Services It is listed as an extremely hazardous substance according to the U.S. Emergency Planning and Community Right-to-Know Act.40 CFR Part 355 Appendix A Extremely Hazardous Chemicals
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