Dimethoate

CAS RN: 60-51-5

Disposal Methods

Do not contaminate water, food or feed by storage and disposal. PESTICIDE DISPOSAL: ... If these wastes cannot be disposed of by use according to label instructions, contact your State Pesticide or Environmental Control Agency, or the Hazardous Waste representative at the nearest EPA Regional Office for guidance. CONTAINER DISPOSAL: Plastc: Triple rinse (or equivalent). Then offer for recycling or reconditioning, or puncture and dispose of in a sanitary landfill, or incineration, or if allowed by state and local authorities, by vurning. If burned, stay out of smoke. /Def-Fend E-267/
Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number P044, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.
Potential candidate for rotary kiln incineration with a temperature range of 820-1600 deg C with residence times for liquids and gases, seconds; solids, hours. Also, a potential candidate for fluidized bed incineration with a temperature range of 450 to 980 deg C with residence times for liquids and gases, seconds; solids longer. /From table/
This compound should be susceptible to removal from wastewater by air stripping.
Alkaline hydrolysis: Dimethoate is detoxicated with alkaline cmpd. For this purpose, recommended are the preparation DIAS (a mixture of synthetic surfactants and organic solvents and alkali), 3-5% soln of potassium hydroxide, soda ash or lime chloride (1 kg in 4 l of water). The rate of detoxication increases with heating. The overalls polluted with organophosphorus cmpd should be shaken and soaked in soap-and-soda soln for 6-8 hr. Then the overalls should be washed two or three times in a hot soap-and-soda soln and rinsed carefully. Containers should be decontaminated with 5% caustic or washing soda (300-500 g per 10 l of water). The containers should be first filled with this soln, kept for 6-12 hr, then washed with ample water. If soda is not available, wood ash may be used instead. Waste dimethoate and containers should be destroyed in accordance with the sanitary rules.
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. 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 soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
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