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Substance Name: Metribuzin [BSI:ISO]
RN: 21087-64-9
UNII: QO836138OV
InChIKey: FOXFZRUHNHCZPX-UHFFFAOYSA-N

Molecular Formula

  • C8-H14-N4-O-S

Molecular Weight

  • 214.2916
 

Classification Codes

Classification Codes

  • Agricultural Chemical
  • Herbicide
  • Herbicides
  • Mutation Data
  • Pesticides
  • Reproductive Effect

Superlist Classification Code

  • TWA 5 mg/m3; Not classifiable as a human carcinogen

Names and Synonyms

Results Name

  • Metribuzin [BSI:ISO]

Name of Substance

  • Metribuzin
  • Metribuzin [BSI:ISO]

Synonyms

  • 1,2,4-Triazin-5-one, 4-amino-6-tert-butyl-3-(methylthio)-
  • 3-Methylthio-4-amino-6-tert-butyl-1,2,4-triazin-5-one
  • 4-Amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one
  • 4-Amino-6-tert-butyl-3-(methylthio)-1,2,4-triazin-5-one
  • 4-Amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one
  • 4-Amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one
  • 4-Amino-6-tert-butyl-4,5-dihydro-3-methylthio-1,2,4-triazin-5-one
  • 5-26-06-00432 (Beilstein Handbook Reference)
  • BAY 61597
  • Bay 94337
  • BAY dic 1468
  • Bayer 6159H
  • Bayer 6443H
  • Bayer 94337
  • BRN 0746650
  • Caswell No. 033D
  • DIC 1468
  • EINECS 244-209-7
  • EPA Pesticide Chemical Code 101101
  • HSDB 6844
  • Lexone
  • Lexone 4L
  • Lexone DF
  • Metribuzin
  • Metribuzine
  • Metribuzine [ISO-French]
  • NTN 70
  • Sencor
  • Sencor 4F
  • Sencor DF
  • Sencorex
  • Sencorex L.F.
  • Senkor
  • UNII-QO836138OV
  • Zenkor

Systematic Names

  • 1,2,4-Triazin-5(4H)-one, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-
  • as-Triazin-5(4H)-one, 4-amino-6-tert-butyl-3-(methylthio)-
  • Metribuzin

Superlist Names

  • 1,2,4-Triazin-5(4H)-one, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-
  • Metribuzin

Registry Numbers

CAS Registry Number

  • 21087-64-9

FDA UNII

  • QO836138OV

System Generated Number

  • 0021087649

Structure Descriptors

InChI

1S/C8H14N4OS/c1-8(2,3)5-6(13)12(9)7(14-4)11-10-5/h9H2,1-4H3

InChIKey

FOXFZRUHNHCZPX-UHFFFAOYSA-N

Smiles

CC(C)(C)c1c(=O)n(c(nn1)SC)N

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cat LD50 oral > 500mg/kg (500mg/kg)   "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A280, Pg. 1983,
guinea pig LD50 oral 250mg/kg (250mg/kg)   "Wirksubstanzen der Pflanzenschutz und Schadlingsbekampfungsmittel," Perkow, W., Berlin, Verlag Paul Parey, 1971-1976Vol. -, Pg. -, 1971/1976.
mouse LC inhalation > 860mg/m3/4H (860mg/m3)   "Documentation of the Threshold Limit Values and Biological Exposure Indices," 5th ed., Cincinnati, OH, American Conference of Governmental Industrial Hygienists, Inc., 1986Vol. 6, Pg. 1042, 1991.
mouse LD50 intraperitoneal 210mg/kg (210mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) Pesticide Biochemistry and Physiology. Vol. 23, Pg. 123, 1984.
mouse LD50 oral 564mg/kg (564mg/kg)   Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 12, Pg. 127, 1987.
mouse LD50 skin > 1gm/kg (1000mg/kg)   Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 12, Pg. 127, 1987.
mouse LD50 subcutaneous 367mg/kg (367mg/kg)   Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 12, Pg. 127, 1987.
quail LD50 oral 164mg/kg (164mg/kg)   Pesticide Manual. Vol. 8, Pg. 573, 1987.
quail LD50 unreported 168mg/kg (168mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C204, 1991.
rabbit LD50 skin > 20gm/kg (20000mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C204, 1991.
rat LC50 inhalation > 860mg/m3/4H (860mg/m3)   Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 12, Pg. 127, 1987.
rat LD50 intraperitoneal 239mg/kg (239mg/kg)   Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 12, Pg. 127, 1987.
rat LD50 oral 1100mg/kg (1100mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C204, 1991.
rat LD50 skin 2gm/kg (2000mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1001, 1986.
rat LD50 subcutaneous 814mg/kg (814mg/kg)   Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 12, Pg. 127, 1987.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 126 deg C   EXP
pKa Dissociation Constant 1 (none)   EXP
log P (octanol-water) 1.7 (none)   EXP
Water Solubility 1050 mg/L 20 EXP
Vapor Pressure 4.35E-07 mm Hg 20 EXP
Henry's Law Constant 1.17E-10 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 3.56E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.