Dichlorprop butotyl

335.2229

335.22

258-528-4

DTXSID0041858

44.8

4.9

In water, 1.049 mg/L at 25 °C (est)

Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Storage class (TRGS 510): Non Combustible Liquids.

4.05X10-6 mm Hg at 25 °C (est)

Henry's Law constant = 1.42X10-7 atm-cu m/mol at 25 °C (est)

The esters are hydrolyzed on warming with acids or alkalis.|Hydroxyl radical reaction rate constant = 2.68X10-11 cu cm/molec-sec at 25 °C (est)

Stable under recommended storage conditions.

SRP: Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in air, soil or water; effects on animal, aquatic and plant life; and conformance with environmental and public health regulations. If it is possible or reasonable use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination.|Product: Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging: Dispose of as unused product.

Incompatible materials: Strong oxidizing agents.

|Warning|H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]|P273, P391, and P501

Eye/face protection: Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166 (EU).|Handle with gloves.|Body Protection: Impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.|Respiratory protection not required. For nuisance exposures use type OV/AG (US) or type ABEK (EU EN 14387) respirator cartridges. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).

Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.|Advice for firefighters: Wear self-contained breathing apparatus for firefighting if necessary.

ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up: Keep in suitable, closed containers for disposal.

ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.|Appropriate engineering controls: Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.|Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.

Occupational exposure and general population exposure should be low or non-existent since dichlorprop-butotyl is no longer produced or used in the US. (SRC)

IDENTIFICATION AND USE: Dichlorprop-butotyl is no longer produced or used in the US. HUMAN STUDIES: There are no data available. ANIMAL STUDIES: There are no data available.

Dichlorprop-butotyl's production may result in its release to the environment through various waste streams; its former use as an herbicide(1) resulted in its direct release to the environment(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 970(SRC), determined from a structure estimation method(2), indicates that dichlorprop-butotyl is expected to have moderate mobility in soil(SRC). Volatilization of dichlorprop-butotyl from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.4X10-7 atm-cu m/mole(SRC), developed using a fragment constant estimation method(3). Dichlorprop-butotyl is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 4.0X10-6 mm Hg at 25 °C(SRC), determined from a fragment constant method(2). Biodegradation data in soil were not available(SRC, 2018).|AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 970(SRC), determined from a structure estimation method(2), indicates that dichlorprop-butotyl is expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 1.4X10-7 atm-cu m/mole(SRC), developed using a fragment constant estimation method(2). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 470 and 3400 days, respectively(SRC). According to a classification scheme(4), an estimated BCF of 450(SRC), from an estimated log Kow of 4.52(2) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is moderate(SRC). Biodegradation data in water were not available(SRC, 2018).|ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), dichlorprop-butotyl, which has an estimated vapor pressure of 4.0X10-6 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), will exist in both the vapor and particulate phases in the ambient atmosphere. Vapor-phase dichlorprop-butotyl is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 14 hrs(SRC), calculated from its rate constant of 2.7X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(2). Particulate-phase dichlorprop-butotyl may be removed from the air by wet and dry deposition(SRC). Dichlorprop-butotyl contains chromophores that absorb at wavelengths >290 nm(3) and, therefore, may be susceptible to direct photolysis by sunlight(SRC).

The rate constant for the vapor-phase reaction of dichlorprop-butotyl with photochemically-produced hydroxyl radicals has been estimated as 1.4X10-7 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1). This corresponds to an atmospheric half-life of about 14 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). A base-catalyzed second-order hydrolysis rate constant of 2.6 L/mole-sec(SRC) was estimated using a structure estimation method(1); this corresponds to half-lives of 300 and 31 days at pH values of 7 and 8, respectively(1). Dichlorprop-butotyl contains chromophores that absorb at wavelengths >290 nm(2) and, therefore, may be susceptible to direct photolysis by sunlight(SRC).

An estimated BCF of 450 was calculated in fish for dichlorprop-butotyl(SRC), using an estimated log Kow of 4.52(1) and a regression-derived equation(1). According to a classification scheme(2), this BCF suggests the potential for bioconcentration in aquatic organisms is high(SRC).

1.00e+03 L/kg|Using a structure estimation method based on molecular connectivity indices(1), the Koc of dichlorprop-butotyl can be estimated to be 970(SRC). According to a classification scheme(2), this estimated Koc value suggests that dichlorprop-butotyl is expected to have low mobility in soil(SRC).

The Henry's Law constant for dichlorprop-butotyl is estimated as 1.4X10-7 atm-cu m/mole(SRC) developed using a fragment constant estimation method(1). This Henry's Law constant indicates that dichlorprop-butotyl is expected to be essentially nonvolatile from water and moist soil surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 470 days(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 3400 days(SRC). Dichlorprop-butotyl is not) expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 4.0X10-6 mm Hg(SRC), determined from a fragment constant method(1).

Water quality data compiled from the Retrieval (STORET) Data Warehouse and the USGS National Water Information System (NWIS) reports surface water and ground water monitoring data for various chemicals but did not include dichlorprop-butotyl as of 2018(1).

/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Chlorophenoxy herbicides and related compounds/|/SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . Monitor body temperature and treat if necessary. /Chlorophenoxy herbicides and related compounds/|/SRP:/ Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious. Positive pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of 0.9% saline (NS) or lactated Ringer's /SRP: "To keep open", minimal flow rate/. Titrate to maintain adequate urine flow. For hypotension with signs of hypovolemia, administer fluid cautiosly. Consider vasopressors if patient is hypotensive with a normal fluid volume ... . Treat seizures with diazepam (Valium) or lorazepam (Ativan) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Chlorophenoxy herbicides and related compounds/|1. Decontaminate skin and hair by bathing with soap and water and shampooing. Individuals with chronic skin disease or known sensitivity to these herbicides should either avoid using them or take strict precautions to avoid contact (respirator, gloves, etc). /Chlorophenoxy herbicides/|For more Antidote and Emergency Treatment (Complete) data for Dichlorprop-butotyl (12 total), please visit the HSDB record page.

2,4-DP butoxyethyl ester

Propanoic acid, 2-(2,4-dichlorophenoxy)-, 2-butoxyethyl ester: INACTIVE