Dimethoate

CAS RN: 60-51-5

Other Properties

Relatively stable in aqueous media at pH 2-7. Hydrolyzed in alkaline solutions. Photostability half-life >175 days at pH 5. Decomposes on heating, forming the O,S-dimethyl analogue
Burns readily on contact with flame
The technical grade (96% purity) forms white to greyish crystals; MP 45-47 deg C
Dimethoate starts to disintegrate at 40 deg C. The disintegration of the pure active ingredient is an exothermal reaction (40.1 J/g). In the presence of the solvent the disintegration is completely endothermal.
Henry's Law constant = 2.43X10-10 atm-cu m/mol at 25 deg C (est)
Hydroxyl radical reaction rate constant = 7.90X10-11 cu cm/molec-sec at 25 deg C (est)
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