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 ;
EC Number	217-137-9;
PubChem CID	2770166;
UNII	C3U604L47F ;
	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
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H312, H330
Precautionary statements	P260, P264, P270, P271, P280, P284, P301+P310, P302+P352, P304+P340, P310, P312, P320, P321, P322, P330, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)	<imagemap> File:NFPA 704.svg\|80px\|alt=NFPA 704 four-colored diamond poly 150 150 300 300 150 450 0 300 Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas poly 300 0 450 150 300 300 150 150 Flammability (red): no hazard code poly 450 150 600 300 450 450 300 300 Instability (yellow): no hazard code poly 300 300 450 450 300 600 150 450 Special hazards (white): no code desc none </imagemap> 4
Safety data sheet (SDS)	MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) 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]

Toxicity

Acetone thiosemicarbazone 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]

Symptoms of exposure

Symptoms of acute exposure to acetone thiosemicarbazide may include nausea, vomiting, eye and skin irritation, excessive salivation, pulmonary edema, hyperglycemia, and seizures.^[5]

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.
^ "ACETONE THIOSEMICARBAZIDE | CAMEO Chemicals | NOAA".

[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.

[5] "ACETONE THIOSEMICARBAZIDE | CAMEO Chemicals | NOAA".

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