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Substance Name: 2,4,5-T [BSI:ISO]
RN: 93-76-5
UNII: 9Q963S4YMX
InChIKey: SMYMJHWAQXWPDB-UHFFFAOYSA-N

Note

  • An herbicide with strong irritant properties. Use of this compound on rice fields, orchards, sugarcane, rangeland, and other noncrop sites was terminated by the EPA in 1985. (From Merck Index, 11th ed)

Molecular Formula

  • C8-H5-Cl3-O3

Molecular Weight

  • 255.4835
 

Classification Codes

Classification Codes

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

Superlist Classification Codes

  • Reportable Quantity (RQ) = 1000 lb
  • TWA 10 mg/m3
  • TWA 10 mg/m3; Not classifiable as a human carcinogen

Names and Synonyms

Results Name

  • 2,4,5-T [BSI:ISO]

Name of Substance

  • 2,4,5-T
  • 2,4,5-T [BSI:ISO]
  • 2,4,5-Trichlorophenoxyacetic acid

MeSH Heading

  • 2,4,5-Trichlorophenoxyacetic acid

Synonyms

  • (2,4,5-Trichloor-fenoxy)-azijnzuur
  • (2,4,5-Trichloor-fenoxy)-azijnzuur [Dutch]
  • (2,4,5-Trichlor-phenoxy)-essigsaeure
  • (2,4,5-Trichlor-phenoxy)-essigsaeure [German]
  • 2,4,5-T
  • 2,4,5-Trichlorophenoxyacetic acid
  • 4-06-00-00973 (Beilstein Handbook Reference)
  • Acide 2,4,5-trichloro phenoxyacetique
  • Acide 2,4,5-trichloro phenoxyacetique [French]
  • Acido (2,4,5-tricloro-fenossi)-acetico
  • Acido (2,4,5-tricloro-fenossi)-acetico [Italian]
  • AI3-14656
  • Arbokan
  • BCF-Bushkiller
  • BRN 2055620
  • Brush Killer
  • Brush RHAP
  • Brush-off 445 low volatile brush killer
  • Brushtox
  • Caswell No. 881
  • CCRIS 1466
  • Cido (2,4,5-tricloro-fenossi)-acetico
  • Cido (2,4,5-tricloro-fenossi)-acetico [Italian]
  • Crossbow
  • Debroussaillant concentre
  • Debroussaillant super concentre
  • Decamine 4T
  • Ded-Weed
  • Ded-weed brush killer
  • Ded-weed lv-6 brush kil and t-5 brush kil
  • EINECS 202-273-3
  • Envert-T
  • EPA Pesticide Chemical Code 082001
  • Estercide t-2 and t-245
  • Farmco fence rider
  • Fence rider
  • Forron
  • Forst U 46
  • Fortex
  • Fruitone A
  • HSDB 1145
  • Inverton 245
  • Kwas 2,4,5-trojchlorofenoksyoctowy
  • Kwas 2,4,5-trojchlorofenoksyoctowy [Polish]
  • Line rider
  • Lo-vol
  • NSC 430
  • Phortox
  • RCRA waste number U232
  • Reddon
  • Reddox
  • Spontox
  • Super D Weedone
  • T-Nox
  • Tippon
  • Tippontormona
  • Trioxon
  • UNII-9Q963S4YMX
  • VEON
  • Veon 245
  • Verton 2T
  • Visko Rhap
  • Visko rhap low volatile ester

Systematic Names

  • 2,4,5-T
  • 2,4,5-Trichlorophenoxyacetic acid
  • Acetic acid, (2,4,5-trichlorophenoxy)-
  • Acetic acid, 2-(2,4,5-trichlorophenoxy)-

Superlist Names

  • 2,4,5-T
  • 2,4,5-T acid
  • 2,4,5-T [Chlorophenoxy herbicides]
  • 2,4,5-Trichlorophenoxyacetic acid
  • Acetic acid, (2,4,5-trichlorophenoxy)-
  • RCRA waste no. U232

Registry Numbers

CAS Registry Number

  • 93-76-5

FDA UNII

  • 9Q963S4YMX

System Generated Number

  • 0000093765

Structure Descriptors

InChI

1S/C8H5Cl3O3/c9-4-1-6(11)7(2-5(4)10)14-3-8(12)13/h1-2H,3H2,(H,12,13)

InChIKey

SMYMJHWAQXWPDB-UHFFFAOYSA-N

Smiles

c1(c(cc(c(c1)Cl)Cl)Cl)OCC(=O)O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
chicken LD50 oral 310mg/kg (310mg/kg) GASTROINTESTINAL: GASTRITIS

LIVER: FATTY LIVER DEGERATION

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
American Journal of Veterinary Research. Vol. 15, Pg. 622, 1954.
dog LD50 oral 100mg/kg (100mg/kg)   Pharmacological Reviews. Vol. 14, Pg. 225, 1962.
guinea pig LD50 oral 381mg/kg (381mg/kg)   Pesticide Chemicals Official Compendium, Association of the American Pesticide Control Officials, Inc., 1966. Vol. -, Pg. 1178, 1966.
hamster LD50 oral 425mg/kg (425mg/kg)   Mutation Research. Vol. 65, Pg. 83, 1979.
mammal (species unspecified) LD50 oral 500mg/kg (500mg/kg)   Science. Vol. 165, Pg. 465, 1969.
mouse LD50 oral 242mg/kg (242mg/kg)   Roczniki Panstwowego Zakladu Higieny. Vol. 31, Pg. 373, 1980.
rat LD50 oral 300mg/kg (300mg/kg)   Residue Reviews. Vol. 10, Pg. 97, 1965.
rat LD50 skin 1535mg/kg (1535mg/kg)   Fundamental and Applied Toxicology. Vol. 7, Pg. 299, 1986.
rat LD50 unreported 500mg/kg (500mg/kg)   "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 171, 1971.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 153 deg C   EXP
pKa Dissociation Constant 2.833 (none) 25 EXP
log P (octanol-water) 3.31 (none)   EXP
Water Solubility 278 mg/L 25 EXP
Henry's Law Constant 8.68E-09 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 6.08E-12 cm3/molecule-sec 25 EST

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