1582-09-8

Yellow-orange crystalline solid. Denser than water and not soluble in water. Hence sinks in water. Melting point 48.5-49°C. Used as a selective pre emergence herbicide.

TRIFLURALIN(1582-09-8) is a trifluoromethyl dinitroaniline derivative. Dinitroaniline has a record of industrial explosions. Nothing has been reported implicating TRIFLURALIN(1582-09-8) in any such accidents. This may be because of the trifluoromethyl substitution may mitigate the instability of the molecule. However, care should be taken in the extremes of heat, shock, and friction sources that may trigger an explosive release of energy.

Insoluble in water.

Dust may irritate eyes. No toxic symptoms have been observed during the manufacture and use of this compound.

A potential danger to those involved in the manufacture, formulation and application of this selective, preemergence herbicide.

Special Hazards of Combustion Products: Toxic and irritating hydrogen fluoride gas may be formed in fires.

Skin Contact: Flood all areas of body that have contacted the substance with water. Don’t wait to remove contaminated clothing; do it under the water stream. Use soap to help assure removal. Isolate contaminated clothing when removed to prevent to prevent contact by others. Eye Contact: Remove any contact lenses at once. Flush eyes well with copious quantities of water or normal saline for at least 20-30 minutes. Seek medical attention. Inhalation: Leave contaminated area immediately; breathe fresh air. Proper respiratory protection must be supplied to any rescuers. If coughing, difficult breathing or any other symptoms develop, seek medical attention at once, even if symptoms develop many hours after exposure. Ingestion: If convulsions are not present, give a glass or two of water or milk to dilute the substance. Assure that the person’s airway is unobstructed and contact a hospital or poison center immediately for advice on whether or not to induce vomiting.

UN2588 Pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

Trifluralin is a trifluoromethyl dinitroaniline derivative. Dinitroaniline has a record of industrial explosions. Nothing has been reported implicating trifluralin in any such accidents. This may be because of the trifluoromethyl substitution may mitigate the instability of the molecule. However, care should be taken in the extremes of heat, shock, and friction sources that may trigger an explosive release of energy. Fluorocarbons can react violently with barium, potassium, sodium.

Trifluralin is an orange crystalline solid.

Yellowish-orange solid. Insoluble in water; soluble in xylene, acetone, and ethanol.

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed. Trifluralin does contain fluorine, and therefore incineration presents the increased hazard of HF in the off-gases. Prior to incineration, fluorine-containing compounds should be mixed with slaked lime plus vermiculite, sodium carbonate or sand-soda ash mixture (90-10).

Preemergence herbicide for controlling many grasses and broad-leaved weeds.

Pre-emergence herbicide used for grass control in crops.

Trifluralin is a herbicide, first approved in 1963, for control of annual grasses and broadleaf weeds on a variety of crops. Trifluralin is registered for nonfood uses including residential use. Trifluralin comes in a variety of formulations and is applied as a soil-incorporated treatment.

ChEBI: A substituted aniline that is N,N-dipropylaniline substituted by a nitro groups at positions 2 and 6 and a trifluoromethyl group at position 4. It is an agrochemical used as a pre-emergence herbicide.

Herbicide: Trifluralin is a selective, pre-emergence herbicide used to control many annual grasses and broadleaf weeds in a large variety of tree fruit, nut, vegetable, and grain crops, including soybeans, sunflowers, cotton, and alfalfa. It is also used on rights-of-way, on set-aside land (i.e., arable land temporarily taken out of use). A general use pesticide (GUP). Not approved for use in EU countries . Registered for use in the U.S.

AGREFLAN®; AGRIFLAN® 24; ASHLADE TRIMARAN®; AUTUMN KITE®; BROADSTRIKE®; BUCKLE®; CALLIFORT®; CAMPBELL'S TRIFLURON®; CHANDOR®; COMMENCE®; CRISALIN®; DEVRINOL T®; DIGERMIN®; ELANCOLAN®; FLINT®; FLORA®; FLURENE SE®; FLUTRIX®; FREEDOM®; GORDON’S WEEDER®; HERBIFLURIN®; IPERSAN®; JANUS®; L-36352®; LILLY 36,352®; LINNET®; MARKSMAN®; MARKSMAN 2, TRIGARD®; M. T. F®; NITRAN®; OLITREF®; ONSLAUGHT®; PREMERLIN 600 CE®; SINFLOWAN®; SOLO®; SU SEGURO CARPIDOR®; TEAM®; TREFANOCIDE®; TREFICON®; TREFLAN®; TREFLANOCIDE®; TRIFARMON®; TRIFLURALINA® 600; TRIFLUREX®; TRIFUREX®; TRIGARD®; TRIKEPIN®; TRILIN®; TRILIN® 10G; TRIM®; TRIMARAN®; TRIPART TRIFLURALIN 48 EC; TRISTAR®; TRUST®; TURFLAN®; URANUS® (trifluralin + linuron)

Biological. Laanio et al. (1973) incubated 14CF3-tri?uralin with Paecilomyces, Fusar- ium oxysporum, or Aspergillus fumigatus and reported that <1% was converted to 14CO2. From the first-order biotic and abiotic rate constants of tri?uralin in estuarine water and sediment/water systems, the estimated biodegradation half-lives were 2.5–9.7 and 2.4–7.1 days, respectively (Walker et al., 1988).
Soil. Anaerobic degradation in a Crowley silt loam yielded α,α,α-tri?uoro-N4,N4- dipropyl-5-nitrotoluene-3,4-diamine and α,α,α-tri?uoro-N4,N4-dipropyltoluene-3,4,5-tri- amine (Parr and Smith, 1973). Probst and Tepe (1969) reported that tri?ur
Golab et al. (1979) studied the degradation of tri?uralin in soil over a 3-year period. They found that the herbicide undergoes N-dealkylation, reduction of nitro substituents, followed by the formation cyclized products. Of the 28 transformation products
Zayed et al. (1983) studied the degradation of tri?uralin by the microbes Aspergillus carneus, Fusarium oxysporum and Trichoderma viride. Following an inoculation and incubation period of 10 days in the dark at 25°C, the following metabolites were identified: α,α,α-trifluoro-2,6-dinitro-N-propyl-p-toluidine, α,α,α-trifluoro-2,6-dinitro-p-toluidine, 2-amino-6-nitro-α,α,α-tri?uoro-p-toluidine and 2,6-dinitro-4-tri?uoromethyl phenol. The reported half-life in soil is 132 days (Jury et al., 1987).
The half-lives for tri?uralin in soil incubated in the laboratory under aerobic and anaerobic conditions ranged from 33 to 375 days (Probst et al., 1967; Parr and Smith, 1973; Kearney et al., 1976; Zimdahl and Gwynn, 1977) to 4 to 70 days, respectively (

Freely soluble in Stoddard solvent (Windholz et al., 1983), chloroform, methanol (Probst et al., 1967), acetone (400 g/L), xylene (580 g/L) (Worthing and Hance, 1991), ether, and ethanol (quoted, Bailey and White, 1965)

Store at -20°C

Technical trifluralin has low acute toxicity, whereas solvents often used for the emulsification of trifluralin have been shown to be irritating to the eyes and skin. An active component of trifluralin toxicity is the volatile nitrosamine, N-nitroso-din- propylamine, which may be the active compound in trifluralin toxicity.