Quinalphos

Quinalphos is an organothiophosphate chemical chiefly used as a pesticide. It is a reddish-brown liquid. The chemical formula is C12H15N2O3PS, and IUPAC name O,O-diethyl O-quinoxalin-2-yl phosphorothioate.[1] Ranked 'moderately hazardous' in World Health Organization's (WHO) acute hazard ranking, use of quinalphos, classified as a yellow label (highly toxic) pesticide in India, is widely used in the following crops: wheat, rice, coffee, sugarcane, and cotton.

Quinalphos
Names
Preferred IUPAC name
O,O-Diethyl O-(quinoxalin-2-yl) phosphorothioate
Other names
O,O-diethyl O-quinoxalin-2-yl phosphorothioate; Diethquinalphion; Diethquinalphione
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.650
UNII
  • InChI=1S/C12H15N2O3PS/c1-3-15-18(19,16-4-2)17-12-9-13-10-7-5-6-8-11(10)14-12/h5-9H,3-4H2,1-2H3
    Key: JYQUHIFYBATCCY-UHFFFAOYSA-N
  • InChI=1/C12H15N2O3PS/c1-3-15-18(19,16-4-2)17-12-9-13-10-7-5-6-8-11(10)14-12/h5-9H,3-4H2,1-2H3
    Key: JYQUHIFYBATCCY-UHFFFAOYAW
  • CCOP(=S)(OCC)OC1=NC2=CC=CC=C2N=C1
  • S=P(OCC)(OCC)Oc1nc2ccccc2nc1
Properties
C12H15N2O3PS
Molar mass 298.30 g·mol−1
Appearance Reddish-brown liquid
Melting point 31 °C (88 °F; 304 K)
17.8 mg/L at 22 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. Central Insecticides Board & Registration Committee. 'List of Insecticides'.
  • Quinalphos in the Pesticide Properties DataBase (PPDB)
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