808. Arsenoacetic Acid

Nomenclature

CAS number: 544-27-4
2,2′-(1,2-Diarsenediyl)bisacetic acid; arsenodiacetic acid; diarsenoacetic acid.
C4H6As2O4; mol wt 267.93.
C 17.93%, H 2.26%, As 55.93%, O 23.89%.

Description and references

Prepd by dissolving sodium arsonoacetate and sodium hypophosphite in 15% H2SO4: C. S. Palmer, J. Am. Chem. Soc. 45, 3023 (1923); Org. Synth. coll. vol. I, 73 (1941). Compare Arsonoacetic Acid.

Chemical structure

Properties

Minute yellow needles, begin to dec at about 205°, but do not melt below 260°. Practically insol in water and common organic solvents. Readily sol in pyridine, dil sodium hydroxide and dil sodium carbonate solns.

Derivative

Disodium salt.

Nomenclature

Disodium arsenoacetate.
C4H4As2Na2O4; mol wt 311.89.
C 15.40%, H 1.29%, As 48.04%, Na 14.74%, O 20.52%.

Properties

Yellow powder, freely sol in water.

Therapeutic Category (Veterinary)

Disodium salt has been used as an injectable tonic for horses.