Metribuzin

Metribuzin
Names
	Preferred IUPAC name 3-Amino-5-tert-butyl-2-(methylsulfanyl)-1,2,4-triazin-5(4H)-one
	Other names 4-Amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one
Identifiers
CAS Number	21087-64-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:34846 ;
ChemSpider	28287;
ECHA InfoCard	100.040.175
PubChem CID	30479;
UNII	QO836138OV ;
CompTox Dashboard (EPA)	DTXSID6024204 ;
	InChI InChI=1S/C8H14N4OS/c1-8(2,3)5-6(13)12(9)7(14-4)11-10-5/h9H2,1-4H3 Key: FOXFZRUHNHCZPX-UHFFFAOYSA-N; InChI=1/C8H14N4OS/c1-8(2,3)5-6(13)12(9)7(14-4)11-10-5/h9H2,1-4H3 Key: FOXFZRUHNHCZPX-UHFFFAOYAI;
	SMILES CC(C)(C)C1=NN=C(N(C1=O)N)SC;
Properties
Chemical formula	C8H14N4OS
Molar mass	214.29 g·mol−1
Appearance	Colorless, crystalline solid
Density	1.31 g/cm3
Melting point	125 °C (257 °F; 398 K)
Solubility in water	0.1% (20 °C)
Vapor pressure	0.0000004 mmHg (20 °C)
Hazards
	NIOSH (US health exposure limits):
PEL (Permissible)	none
REL (Recommended)	5 mg/m3
IDLH (Immediate danger)	N.D.
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Metribuzin (4-amino-6-tert-butyl-3-(methylthio)-1,2,4-triazin-5(4H)-one) is a herbicide used both pre- and post-emergently in crops including soy bean, potatoes, tomatoes, barley, chickpeas, faba beans, lupins, lentils, vetch, blade wheat and sugar cane.

It is registered for use in Australia and India.