2,4,5-T isooctyl ester

367.7

366.056

246-700-1

K5K0WAR4MW

3345

DTXSID7026075

35.5

6.8

1.223 g/cm³ @ Temp: 68 °C

410 °C

265-420 DEG F (OPEN CUP) /2,4,5-T ESTERS/

10 mg/l water

18 mm Hg @ 212 deg C

Very weak odor; mixtures with kerosene or diesel oil have odor of the solvent /2,4,5-T esters/

Insoluble in water.

Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters

Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.

May attack some forms of plastics /2,4,5-T esters/|The salts & esters of 2,4,5-T are non-corrosive under normal application conditions /2,4,5-T/

6.1(b)

3345

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number F027, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste. /2,4,5-T cmpd/|Group I Containers: Combustible containers from organic or metallo-organic pesticides (except organic mercury, lead, cadmium, or arsenic compounds) should be disposed of in pesticide incinerators or in specified landfill sites. /Organic or metallo-organic pesticides/|Group II Containers: Noncombustible containers from organic or metallo-organic pesticides (except organic mercury, lead, cadmium, or arsenic compounds) must first be triple-rinsed. Containers that are in good condition may be returned to the manufacturer or formulator of the pesticide product, or to a drum reconditioner for reuse with the same type of pesticide product, if such reuse is legal under Department of Transportation regulations (eg 49 CFR 173.28). Containers that are not to be reused should be punctured ... and transported to a scrap metal facility for recycling, disposal or burial in a designated landfill. /Organic or metallo-organic pesticides/

USEPA; Ambient Water Quality Criteria Doc: 2,3,7,8-Tetrachlorodibenzo-p-dioxin (1980) EPA 440/5-80-072|Nat'l Research Council Canada; Phenoxy Herbicides Their Effects on Environmental Quality (1978) NRCC No. 16075|Vet Admin Rev Lit on Herbicides (1981) VA Contract No. V101(93)p-823

This chemical is combustible. (NTP, 1992)

Excerpt from ERG Guide 153 [Substances - Toxic and/or Corrosive (Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

SMALL SPILLS AND LEAKAGE: If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Your contaminated clothing and absorbent paper should be sealed in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned. STORAGE PRECAUTIONS: You should store this material in a refrigerator. STORE AWAY FROM SOURCES OF IGNITION. (NTP, 1992)

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)|Wear appropriate chemical protective ... boots and goggles. /2,4,5-T amine, ester, or salt/|... Rubber gloves ... /2,4,5-T esters/

They will burn, though they may take some effort to ignite. /2,4,5-T amine, ester, or salt/

Extinguish fire using agent suitable for type of surrounding fire. /2,4,5-T amine, ester, or salt/|WATER, FOAM, DRY CHEM, CARBON DIOXIDE. ... WATER OR FOAM MAY CAUSE FROTHING. /2,4,5-T ESTERS/

Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. /2,4,5-T amine, ester, or salt/|Water spill: If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates. /2,4,5-T amine, ester, or salt/

If material /is not/ involved in a fire: Keep material out of water sources and sewers. Build dikes to contain flow as necessary. /2,4,5-T amine, ester, or salt/|Keep upwind. ... Avoid breathing vapors or dusts. Wash away any material which may have contacted the body with copious amounts of water or soap and water. /2,4,5-T amine, ester, or salt/|SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

Irritating to skin and eyes. /2,4,5-T esters/

F027; A hazardous waste from nonspecific sources when a component of a discarded unused formulation. /2,4,5-T/

Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 1000 lb or 454 kg. The toll free number of the NRC is (800) 424-8802; In the Washington D.C. metropolitan area (202) 426-2675. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b). /2,4,5-T Esters/

F027; As stated in 40 CFR 261.31, discarded unused formulations containing tri-, tetra-, or pentachlorophenol or discarded unused formulation containing compounds derived from these chlorophenols. (This listing does not include formulations containing hexachlorophene synthesized from prepurified 2,4,5-trichlorophenol as the sole component.). /2,4,5-T/

During mixing & spraying operations along power line right-of-way, airborne concn of 2,4,5-T esters were < 10-60 ug/cu m. /Chlorophenoxy herbicides/

Spraying operations using herbicide formulations containing the isooctyl ester of 2,4,5-T(1), spills. The isooctyl ester of 2,4,5-T is not listed in current companies of pesticides and therefore may not currently be in use(2,3).|... /Was probably/ sprayed in Vietnam, since 950,000 gallons of Orange II were shipped to Vietnam during 1968 and early 1969. The specified formulation of Orange II was 50 percent by weight of the isooctyl ester of 2,4,5-T, instead of 50 percent of the n-butyl ester of 2,4,5-T, as in Orange. Assuming that one gallon of Orange II, like Orange, weighted approximately 10.7 pounds, one gallon of the specified formulations of Orange II would contain approximately 5.4 pounds of the isooctyl ester of 2,4,5-T. Therefore, Orange II applied at three gallons per acre is estimated to have released a maximum of 16.2 pounds per acre of the isooctyl ester of 2,4,5-T per spraying.

TERRESTRIAL FATE: 2,4,5-T isooctyl ester can rapidly hydrolyze in acidic soil by what is thought to be a soil catalyzed reaction. All of the ester may be converted to the acid in about a day unless the temperature is low(1-2). However, hydrolysis may be retarded in alkaline soil. The ester should adsorb fairly strongly to soil of high organic content. Due to its adsorption to soil and rapid hydrolysis, it is unlikely that the ester will leach into groundwater(SRC).|AQUATIC FATE: If spilled into water, the isooctyl ester of 2,4,5-T will adsorb to sediment and hydrolyze to the free acid. The half-life in water is ca 2 weeks at neutral pH(1), but will be accelerated at higher or lower pH's since ester hydrolysis is catalyzed by acid or base. The ester will adsorb to humic material in the water column. Humic material not only adsorbs the ester but exerts a pH dependent catalytic effect on the hydrolysis, the result of which would be to retard hydrolysis in basic waters and accelerate it in acid waters. Therefore, the rate of disappearance of the isooctyl ester of 2,4,5-T from natural waters will be dependent on pH and on the amount of humic materials in the water. The half-life is speculative but would probably vary from days to weeks(SRC).|ATMOSPHERIC FATE: There is little information on the fate of 2,4,5-T isooctyl ester in the atmosphere. During spraying operations, the ester falling on foliage can hydrolyze to the acid in less than a day(1). (SRC)|2,4,5-T ESTERS ARE RAPIDLY HYDROLYZED AFTER SPRAYING, & THE 2,4,5-T IS THEN FURTHER DECOMPOSED BY BACTERIAL ACTION. THE MAJOR PRODUCT OF 2,4,5-T PHOTODECOMPOSITION IS 2,4,5-TRICHLOROPHENOL. OTHER PRODUCTS IDENTIFIED INCLUDED 4,6-DICHLORORESORCINOL, 4-CHLORORESORCINOL, 2,4,5-TRICHLOROANISOLE. /2,4,5-T/

The isooctyl ester of 2,4,5-T hydrolyzes rapidly in soil moistened at least to the wilting point; after 48 hours no ester could be detected in four Saskatchewan soils (pH 5.6-7.3). Except for a fine sandy loam < 6% of the ester remained after 24 hr(1). The rapidity of this hydrolysis has lead to the speculation that a soil-catalyzed reaction may be occurring(1). Theory predicts that the opposite effect (ie decreased hydrolysis) may occur in basic soils(6). The free acid, 2,4,5-T is the product of the hydrolysis(1). No unchanged isooctyl ester of 2,4,5-T applied at the rates of 1.1-4.3 kg/ha to field plots with Dykeland soil (pH 5.8) in a humid temperate climate could be detected 13 hr after application(3). No specific data could be found for the hydrolysis of the isooctyl ester of 2,4,5-T in water. At pH 7.4 and 20 °C the half-life of the isobutyl and n-amyl esters are 10.2 and 8.4 days, respectively, with the half-life increasing with ester chain length and branching(2). It should be emphasized that ester hydrolysis is catalyzed by acid or base and should be sensitive to pH(SRC). In natural waters containing humic acids another complication arises which has been observed for the 1-octyl ester of 2,4-D but should be a general phenomenon. Hydrolysis in natural waters in the presence of humic material is affected by the adsorption of a fraction of the substrate to the humic material. Under acidic conditions, the humic acid catalyzes the reaction resulting in accelerated hydrolysis while under basic conditions the adsorbed material is simply less available resulting in a decrease of the overall hydrolysis rate(4). Contradictory results by another investigator (ie accelerated hydrolysis in the presence of humic materials)(5) has been ascribed to biodegradation(4). A recent theoretical model which has been put forward not only accounts for the decrease of alkaline hydrolysis rate by humic matter but also an increase in the acid hydrolysis rate(6). Ultraviolet light may also be an important in degradation of these esters(2).|In long-term degradation studies of massive quantities of 2,4-D and 2,4,5-T in test grids, field plots and herbicide storage areas were carried out. The method of herbicide application had significant impact on the amt applied per unit area and hence on residue persistence: spills > or = soil incorporation > aerial application. 2,4,5-T was more persistent in the soil than 2,4-D. The formulation of the herbicide also had significant impact on its persistence: isooctyl ester > butyl ester > acid. The addition of coconut charcoal increases persistence of the phenoxy herbicide residues, especially residues of 2,4,5-T. The appearance of dichlorophenol and trichlorophenol in soils treated with 2,4-D and 2,4,5-T suggests that they are degradation products of the herbicides. A massive concn of herbicides does not sterilize the soils. Apparently, microbial populations respond both quantitatively and qualitatively to the presence of high concentrations of herbicides and may play an important role in their degradation. The contaminant 2,3,7,8-TCDD had a long persistence time in soils (years) and may be a major consideration in the use of soil biodegradation as a disposal option for unwanted phenoxy herbicides or TCDD-contaminated chemical wastes.|From limited data available, it may be concluded that any phenoxy herbicide, whether applied as ester or as dimethylamine salt formulations, may be chemically transformed to the same phenoxyalkanoic anion in soil and water at rates dependent on pH. These anions would presumably reassociate with a variety of inorganic cations present in the soil to maintain electrical neutrality, and then undergo leaching and biological degradation. /Phenoxy esters/

No specific data could be found on the adsorption of 2,4,5-T isooctyl ester to soil or sediment. However, phenoxy herbicide esters adsorb extensively to flocculated humic acids, soils and sediment(1,2) with the degree and strength of adsorption increasing with the number of carbons in the alcohol moiety(1).

The most probable route of exposure to 2,4,5-T would be inhalation and dermal exposure of workers involved in the manufacture, handling or application of 2,4,5-T, related ester compounds or certain tetradifon formulations which contain 2,4,5-T. The general public could potentially be exposed through inhalation of particulate matter or ingestion of fruit, milk or drinking water contaminated with 2,4,5-T. (SRC)|Exposure to chlorophenoxy herbicides may occur through inhalation, skin contact or ingestion. /Chlorophenoxy herbicides/|Agricultural workers outside the USA may be exposed to 2,4,5-T, isooctyl ester during spraying operations using herbicide formulations containing this chemical. (SRC)|... Occupational exposure to chlorophenoxy herbicides ... is known to have occurred during their production, formulation, application & disposal. /Chlorophenoxy herbicides/

THE CHLOROPHENOXY COMPOUNDS ARE ABSORBED ACROSS THE GUT WALL, LUNG, & THE SKIN. THEY ARE NOT SIGNIFICANTLY FAT STORABLE. EXCRETION OCCURS WITHIN HOURS, OR AT MOST DAYS, PRIMARILY IN THE URINE. /CHLOROPHENOXY CMPD/|IN SHEEP GIVEN ORAL DOSE OF 25 MG/KG OF 2,4,5-T ESTER PEAK PLASMA CONCN OF 10 PPM ... FOUND 3-4 HR LATER; 86% OF ADMIN DOSE WAS RECOVERED FROM URINE IN UNALTERED FORM, & 1.4% AS FREE ACID, WITHIN 72 HR. THERE WAS LESS THAN 0.1 PPM OF 2,4,5-T IN TISSUES, BUT IN SHEEP POISONED BY REPEATED DOSES OF 2,4,5-T TISSUE LEVELS WERE 368 PPM. /2,4,5-T ESTERS/

THESE HERBICIDES /CHLOROPHENOXY CMPD/ DO NOT ACCUM IN ANIMALS. THEY ARE NOT EXTENSIVELY METAB BUT ARE ACTIVELY EXCRETED INTO THE URINE ... THEIR PLASMA HALF-LIFE IN MAN IS ABOUT 1 DAY. /CHLOROPHENOXY HERBICIDES/

They exert their herbicidal action by acting as a growth hormone in plants. They have no hormonal action in animals, but their mechanism of toxic action is poorly understood. /Chlorophenoxy compounds/

2,3,7,8-Tetrachlorodibenzo-1,4-dioxin (I) ... was detected in technical samples of ... 2,4,5-T alkyl esters. ... Thirty-two samples of 50% 2,4,5-T alkyl esters in mineral oil, 8 contained <0.05 ppm 2,3,7,8-tetrachlorodibenzo-1,4-dioxin, and 18 <0.5 ppm 2,3,7,8-tetrachlorodibenzo-1,4-dioxin. The maximum found was 28.3 ppm.|... Dioxins ... still are present /but to lesser extent/ as impurities in commercial preparations of the trichlorophenoxy herbicides. /Trichlorophenoxy herbicides/|IT WAS CONCLUDED @ STOCKHOLM CONF, FEB 7-9, 1977, THAT THE ONLY DIOXIN FOUND IN PHENOXY ACID HERBICIDES WHICH IS OF ENVIRONMENTAL CONCERN IS TCDD /2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN/; IT IS FOUND IN 2,4,5-T & 2,4,5-TP. /PHENOXY ACID HERBICIDES/

SYMPTOMS: Symptoms of exposure to this compound may include skin and eye irritation; chloracne, liver disorders, neurological and behavioral changes, fat metabolism disorders, porphyria cutanea tarda, melanosis, muscular pains and aches; fatigue, nervousness and intolerance to colds. ACUTE/CHRONIC HAZARDS: This compound has irritating vapors. When heated to decomposition it emits toxic fumes. (NTP, 1992)

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment. INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing. INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)

The chlorophenoxy herbicides have produced contact dermatitis in man ... . /Chlorophenoxy compounds/|INHALATION OF SPRAY MAY CAUSE BURNING SENSATIONS IN THE NASOPHARYNX & CHEST, & COUGHING MAY RESULT. PROLONGED INHALATION SOMETIMES CAUSES DIZZINESS. /CHLOROPHENOXY COMPOUNDS/|WHEN INGESTED, HIGH CONCENTRATIONS OF CHLOROPHENOXY COMPOUNDS MAY IRRITATE THE MOUTH & THROAT, & GI TRACT. ... CHEST PAIN (FROM ESOPHAGITIS), ABDOMINAL PAIN & DIARRHEA COMMONLY ENSUE. ... ABSORBED CHLOROPHENOXY COMPOUNDS HAVE CAUSED FIBRILLARY MUSCLE TWITCHING, SKELETAL MUSCLE TENDERNESS, & MYOTONIA ... INGESTION OF VERY LARGE AMOUNTS HAS PRODUCED METABOLIC ACIDOSIS, FEVER, TACHYCARDIA, HYPERVENTILATION, VASODILATATION & SWEATING. PARTICULAR CASES HAVE BEEN CHARACTERIZED BY COMA & CONVULSIONS. /CHLOROPHENOXY COMPOUNDS/|Phenoxyherbicides including (2,4,5-trichlorophenoxy)acetic acid have been widely used in New Zealand for over 30 years. In the light of Swedish studies reporting an association between exposure to phenoxyherbicides or chlorophenols and soft tissue sarcoma, a case-control study was undertaken that involved interviewing 82 subjects (cases) with soft tissue sarcoma and 92 controls with other types of cancer. For those potentially exposed to phenoxyherbicides for more than 1 day not in the 5 years before cancer registration, the estimate of relative risk was 1.3, with 90% confidence limits of 0.6-2.5. The comparable relative risk estimate for chlorophenol exposure was 1.5, with 90% confidence limits of 0.5-4.5. The discovery of cases in trichlorophenol manufacturing plants in the United States lended support to the Swedish findings but further studies are needed to conclude whether human exposure to these chemicals truly increases the risk of soft tissue sarcoma. /Phenoxyherbicides/|A previous case-control study which used the occupational information available on the New Zealand Cancer Registry found that agricultural workers were at increased risk of developing non-Hodgkin's lymphoma. The findings are now presented for the second phase of the study which entailed interviewing 83 cases of non-Hodgkin's lymphoma registered under code 202 of the International Classification of Diseases together with 168 controls with other types of cancer and 228 general population controls. The findings for the two control groups were similar, and there were no significant differences between cases and controls regarding potential exposure to phenoxyherbicides (odds ratio= 1.4, 90% confidence limits 0.7-2.5, p= 0.26) or chlorophenols (odds ratio= 1.3, 90% confidence limits 0.6-2.7, p= 0.39). The odds ratio for fencing work, necessitating exposure to several potential risk factors including arsenic and sodium pentachlorophenate was 2.0 (90% confidence limits 1.3-3.0, p= 0.01). The odds ratio for employment in a meat works, necessitating potential exposure to 2,4,6-trichlorophenol and zoonotic viruses, was 1.8 (90% confidence limits 1.1-3.1, p= 0.04). There was a significant statistical interaction between the risks associated with these two activities, the odds ratio for involvement in both activities compared with involvement in neither being 5.7 (90% confidence limits 2.3, p= 0.03). /Phenoxyherbicides, chlorophenols, arsenic, and sodium pentachlorophenate/

2,4,5-T isooctyl ester

/FORMER USES:/ INDUSTRIAL & COMMERCIAL USES, 63%; RANGELAND, 26%; RICE (EXCLUDING ISOOCTYL ESTER) 8%; LAWNS & TURF, 3% (1983-INCL 2,4,5-TRICHOROPHENOXYACETIC ACID, ESTERS, & SALTS)

The specified formulation for Orange II was 50% by weight of the isooctyl ester of 2,4,5-T. /Former/|Abco W K-DT 133 (isooctyl esters of 2,4-D and 2,4,5-T). /Former/|Abco WKS-65 Brush Killer (isooctyl esters of 2,4-D, 2,4,5-T, and silvex). /Former/|Amchem 2,4-D-2,4,5-T Low Volatile Ester Brush Killer (isooctyl esters of 2,4-D and 2,4,5-T). /Former/|For more Formulations/Preparations (Complete) data for 2,4,5-T, ISOOCTYL ESTER (50 total), please visit the HSDB record page.

Approx 11.3 million gallons of Agent Orange were sprayed in Vietnam ... of this only 950,000 gallons /which were shipped to Vietnam during 1968 and early 1969) were Orange II (isooctyl ester) as compared to n-butyl ester.|Orange II applied at three gallons per acre is estimated to have released a maximum of 16.2 lb per acre of the isooctyl ester of 2,4,5-T per spraying.|/2,4,5-T, isooctyl ester/ ... applied at 5.4 kg/ha to mature gorse (Ulex europaeus) ... killed 78% of stem tissue and 10% of root crowns.|Chlorophenoxy herbicides are applied alone or as mixtures with other herbicides, in solutions, dispersions, or emulsions in water &/or oil, using equipment that produces large droplets to avoid spray drift. /Chlorophenoxy herbicides/|For more General Manufacturing Information (Complete) data for 2,4,5-T, ISOOCTYL ESTER (8 total), please visit the HSDB record page.

Atmospheric concentrations of 2,4,5-T, isooctyl ester were determined using high pressure liquid chromatography.|Product analysis is by ... GLC of a suitable ester ... . Residues may be determined by GLC of a suitable ester. /2,4,5-T/|Samples of phenoxyalkanoic herbicides in whole plants are acidified, hydrolyzed, and extracted into ether, and analyzed by electron capture gas chromatography (EC/GC) ... using a pyrex column ... packed with 1:1 10% DC 200/15% QF-1 on 80/100 mesh Chromosorb W (AW-DMCS). The injector, column, and (63)Ni electron capture detector temperatures are 220, 195, and 220 °C, respectively. The flow rate of nitrogen carrier is 80 ml/min. /Phenoxyalkanoic Herbicides/|2,4,5-T and /its esters/ in pesticide formulations are determined by automated liquid chromatographic method after extraction of sample into hexane. (Method is modification of liq chromatography method of 2,4-D, 6.288-6.292) ...by collecting major portion extracted with hexane ... .|For more Analytic Laboratory Methods (Complete) data for 2,4,5-T, ISOOCTYL ESTER (7 total), please visit the HSDB record page.