Acetone thiosemicarbazone

Acetone thiosemicarbazone[1]
Names
	Preferred IUPAC name 2-(Propan-2-ylidene)hydrazine-1-carbothioamide
	Other names (Propan-2-ylideneamino)thiourea; Acetone thiosemicarbazide; Dimethyl ketone thiosemicarbazone; Thiosemicarbazone acetone; NSC 711; 2-(1-Methylethylidene)hydrazinecarbothioamide
Identifiers
CAS Number	1752-30-3 ;
3D model (JSmol)	Interactive image; Interactive image;
Abbreviations	ATSC
ChEMBL	ChEMBL500557 ;
ChemSpider	2050659 ;
ECHA InfoCard	100.015.580
EC Number	217-137-9;
PubChem CID	2770166;
UNII	C3U604L47F ;
CompTox Dashboard (EPA)	DTXSID6044480 ;
	InChI InChI=1S/C4H9N3S/c1-3(2)6-7-4(5)8/h1-2H3,(H3,5,7,8) Key: FQUDPIIGGVBZEQ-UHFFFAOYSA-N ; InChI=1/C4H9N3S/c1-3(2)6-7-4(5)8/h1-2H3,(H3,5,7,8) Key: FQUDPIIGGVBZEQ-UHFFFAOYAR;
	SMILES CC(=NNC(=S)N)C; S=C(N)N/N=C(\C)C;
Properties
Chemical formula	C4H9N3S
Molar mass	131.20 g·mol−1
Appearance	White crystals
Melting point	172 to 175 °C (342 to 347 °F; 445 to 448 K)
Hazards
Main hazards	Toxic
Safety data sheet	MSDS
GHS pictograms
GHS Signal word	Danger
GHS hazard statements	H300, H312, H330
GHS precautionary statements	P260, P264, P270, P271, P280, P284, P301+310, P302+352, P304+340, P310, P312, P320, P321, P322, P330, P363, P403+233, P405, P501
NFPA 704 (fire diamond)	4
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

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.[2][3]

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.[4]

References

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. Archived from the original (PDF) on February 25, 2012. Retrieved October 29, 2011. Cite journal requires |journal= (help)

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[1] Acetone thiosemicarbazone, chemicalland21.com

[2] US patent 3637632, Traynor, Lee, "Agents for shortstopping free radical polymerization of vinylidene monomers", issued 1972-Jan-25

[3] Acetone thiosemicarbazone (ATSC) Archived February 27, 2012, at the Wayback Machine, 88chem.com

[gov-right-know-4] "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. Archived from the original (PDF) on February 25, 2012. Retrieved October 29, 2011. Cite journal requires |journal= (help)