Cacodylic acid photograph

Cacodylic Acid

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FormulaC2H7AsO2
Molar mass137. 9977 g/mol
Acidity (pKa) 6
Safety data sheetExternal MSDS
Magnetic susceptibility (χ)-79. 9·10−6 cm3/mol
LD50 (median dose)700 mg/kg (rat, oral)
Date of Reg.
Date of Upd.
ID2170291
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About Cacodylic Acid


Cacodylic acid is the organoarsenic compound with the formula (CH₃)₂AsO₂H. With the formula R₂AsOH, it is the simplest of the organoarsinic acids. It is a colorless solid that is soluble in water. Neutralization of cacodylic acid with base gives cacodylate salts, e. g. sodium cacodylate. They are potent herbicides.

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