Fosthietan

Fosthietan
Names
	Preferred IUPAC name Diethyl N-(1,3-dithietan-2-ylidene)phosphoramidate
Identifiers
CAS Number	21548-32-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:82133;
ChemSpider	28473;
ECHA InfoCard	100.040.383
EC Number	244-437-7;
KEGG	C18999;
PubChem CID	30684;
UNII	4LD157TUHJ;
UN number	3018
CompTox Dashboard (EPA)	DTXSID4041993 ;
	InChI InChI=1S/C6H12NO3PS2/c1-3-9-11(8,10-4-2)7-6-12-5-13-6/h3-5H2,1-2H3 Key: RHJOIOVESMTJEK-UHFFFAOYSA-N; InChI=1/C6H12NO3PS2/c1-3-9-11(8,10-4-2)7-6-12-5-13-6/h3-5H2,1-2H3 Key: RHJOIOVESMTJEK-UHFFFAOYAP;
	SMILES O=P(OCC)(/N=C1\SCS1)OCC;
Properties
Chemical formula	C6H12NO3PS2
Molar mass	241.26 g·mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H310
Precautionary statements	P262, P264, P270, P280, P301+P310, P302+P350, P310, P321, P322, P330, P361, P363, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Fosthietan (chemical formula:C
₆H
₁₂NO
₃PS
₂) is an organophosphate compound used in insecticides and nematicides^[1]. It is a pale-yellow liquid with an odor similar to mercaptan^[2]. It is extremely toxic.

History

Fosthietan was first introduced by American Cyanamid in 1972^[3]. Due to its' high toxicity, its' usage has almost entirely disappeared.

↑ Hertfordshire, University of. "Fosthietan (Ref: CL 64475)". sitem.herts.ac.uk. Retrieved 2026-07-04.
↑ "FOSTHIETAN | CAMEO Chemicals | NOAA". cameochemicals.noaa.gov. Retrieved 2026-07-04.
↑ US4070372A, Garber, Murray & Reger, David William, "Process for the preparation of the 2-diethoxyphosphinylimino-1,3-dithietane", issued 1978-01-24