Acetone thiosemicarbazide; Dimethyl ketone thiosemicarbazone; Thiosemicarbazone acetone; NSC 711; 2-(1-Methylethylidene)hydrazinecarbothioamide
3D model (JSmol)
|Molar mass||131.20 g·mol−1|
|Melting point||172 to 175 °C (342 to 347 °F; 445 to 448 K)|
|Safety data sheet||MSDS|
|R-phrases (outdated)||R21 R25 R26|
|S-phrases (outdated)||S22 S28 S36/37/39 S45|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Acetone thiosemicarbazone is a chemical compound with the molecular formula C4H9N3S. It is used in the plastics industry in the manufacture of polyvinyl chloride (PVC) to terminate the polymerization process.
It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities.
- Acetone thiosemicarbazone, chemicalland21.com
- US patent 3637632, Traynor, Lee, "Agents for shortstopping free radical polymerization of vinylidene monomers", issued 1972-Jan-25
- Acetone thiosemicarbazone (ATSC) Archived February 27, 2012, at the Wayback Machine., 88chem.com
- "40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities" (PDF) (July 1, 2008 ed.). Government Printing Office. Retrieved October 29, 2011.