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Acetone thiosemicarbazone information


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 checkY
3D model (JSmol)
  • Interactive image
  • Interactive image
Abbreviations ATSC
ChEMBL
  • ChEMBL500557 checkY
ChemSpider
  • 2050659 checkY
ECHA InfoCard 100.015.580 Edit this at Wikidata
EC Number
  • 217-137-9
PubChem CID
  • 2770166
UNII
  • C3U604L47F checkY
CompTox Dashboard (EPA)
  • DTXSID6044480 Edit this at Wikidata
InChI
  • InChI=1S/C4H9N3S/c1-3(2)6-7-4(5)8/h1-2H3,(H3,5,7,8) checkY
    Key: FQUDPIIGGVBZEQ-UHFFFAOYSA-N checkY
  • 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
 GHS06: ToxicGHS07: Exclamation mark
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)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability (red): no hazard codeInstability (yellow): no hazard codeSpecial hazards (white): no code
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).
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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]

  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

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