12-03768. Ethanearsonic Acid [Archived]

Nomenclature

CAS number: 507-32-4
Ethylarsonic acid; ethylarsinic acid.
C2H7AsO3; mol wt 154.00.
C 15.60%, H 4.58%, As 48.65%, O 31.17%.
C2H5AsO(OH)2.

Description and references

Prepd from potassium arsenite and ethyl iodide: Dehn, Am. Chem. J. 33, 131 (1905); from sodium arsenite and ethyl bromide: Quick, Adams, J. Am. Chem. Soc. 44, 810 (1922).

Properties

Needles from alc, mp 99.5°. 70 g dissolve in 100 g water at 27°; 112 g dissolve in 100 g water at 40°; 39.4 g dissolve in 100 g of 95% alcohol at 25°.

Derivative

Disodium salt.

Nomenclature

CAS number: 5982-55-8
Mon-Arsone.
C2H5AsNa2O3; mol wt 197.96.
C 12.13%, H 2.55%, As 37.85%, Na 23.23%, O 24.25%.

Properties

Minute hygroscopic crystals, very sol in water.

Therapeutic Category

Formerly as antisyphilitic.

Keywords

Antisyphilitic

Status

This monograph has been retired and is no longer subject to revision or update.