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Substance Name: Diquat [ANSI:BSI:ISO]
RN: 2764-72-9
UNII: A9A615U4MP
InChIKey: SYJFEGQWDCRVNX-UHFFFAOYSA-N

Note

  • A contact herbicide used also to produce desiccation and defoliation. (From Merck Index, 11th ed)

Molecular Formula

  • C12-H12-N2

Molecular Weight

  • 184.241
 

Classification Codes

Classification Codes

  • Defoliants, Chemical
  • Herbicides
  • Mutation Data
  • Pesticides

Superlist Classification Codes

  • Reportable Quantity (RQ) = 1000 lb
  • TWA 0.1 mg/m3, respirable fraction; skin; Not classifiable as a human carcinogen
  • TWA 0.5 mg/m3, inhalable fraction; skin; Not classifiable as a human carcinogen
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Names and Synonyms

Results Name

  • Diquat [ANSI:BSI:ISO]

Name of Substance

  • Diquat
  • Diquat [ANSI:BSI:ISO]

MeSH Heading

  • Diquat

Synonyms

  • 1,1'-Ethylene-2,2'-bipyridyldylium ion
  • 1,1'-Ethylene-2,2'-bipyridylium ion
  • 6,7-Dihydrodipyrido(1,2-a:2',1'-c)pyrazine-5,8-di-ium
  • 6,7-Dihydrodipyrido(1,2-a:2',1'-c)pyrazinediium
  • 9,10-Dihydro-8a,10a-diazoniaphenanthrene
  • 9,10-Dihydro-8a,10a-diazoniaphenanthrene ion
  • Dipyrido(1,2-a:2',1'-c)pyrazinediium, 6,7-dihydro- (8CI)(9CI)
  • Diquat
  • Diquat dication
  • EINECS 220-433-0
  • UNII-A9A615U4MP

Systematic Names

  • 6,7-Dihydrodipyrido(1,2-a:2',1'-c)pyrazinediylium
  • Dipyrido(1,2-a:2',1'-c)pyrazinediium, 6,7-dihydro-

Superlist Names

  • Dipyrido(1,2-a:2',1'-c)pyrazinediium, 6,7-dihydro-
  • Diquat

Registry Numbers

CAS Registry Number

  • 2764-72-9

FDA UNII

  • A9A615U4MP

System Generated Number

  • 0002764729

Structure Descriptors

InChI

1S/C12H12N2/c1-3-7-13-9-10-14-8-4-2-6-12(14)11(13)5-1/h1-8H,9-10H2/q+2

InChIKey

SYJFEGQWDCRVNX-UHFFFAOYSA-N

Smiles

c12c3[n+](CC[n+]1cccc2)cccc3

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
bird - domestic LD50 oral 295mg/kg (295mg/kg)   Pesticide Manual. Vol. 9, Pg. 316, 1991.
chicken LD50 oral 200mg/kg (200mg/kg)   Pesticide Manual. Vol. 9, Pg. 316, 1991.
dog LD50 oral 100mg/kg (100mg/kg)   Pesticide Manual. Vol. 9, Pg. 316, 1991.
domestic animals - goat/sheep LD50 oral 30mg/kg (30mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
British Journal of Industrial Medicine. Vol. 27, Pg. 51, 1970.
guinea pig LD50 oral 100mg/kg (100mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
British Journal of Industrial Medicine. Vol. 27, Pg. 51, 1970.
man TDLo oral 857mg/kg (857mg/kg) KIDNEY, URETER, AND BLADDER: URINE VOLUME DECREASED

BEHAVIORAL: TREMOR

CARDIAC: OTHER CHANGES
Journal of Toxicology, Clinical Toxicology. Vol. 37, Pg. 360, 1999.
mouse LD50 oral 125mg/kg (125mg/kg)   Pesticide Manual. Vol. 9, Pg. 316, 1991.
rabbit LD50 oral 101mg/kg (101mg/kg)   British Journal of Industrial Medicine. Vol. 27, Pg. 51, 1970.
rabbit LD50 oral 101mg/kg (101mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
British Journal of Industrial Medicine. Vol. 27, Pg. 51, 1970.
rabbit LD50 skin > 400mg/kg (400mg/kg)   British Journal of Industrial Medicine. Vol. 27, Pg. 51, 1970.
rat LD50 oral 231mg/kg (231mg/kg)   Pesticide Manual. Vol. 9, Pg. 316, 1991.

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) 2.360 (none)   EST
Water Solubility 70 mg/L 20 EXP
Vapor Pressure 1.00E-08 mm Hg 25 EXP
Henry's Law Constant 3.50E-11 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 3.58E-12 cm3/molecule-sec 25 EST

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