550. Ammonium Salicylate

Nomenclature

CAS number: 528-94-9
2-Hydroxybenzoic acid ammonium salt (1:1); salicylic acid monoammonium salt; Salicyl-Vasogen.
C7H9NO3; mol wt 155.15.
C 54.19%, H 5.85%, N 9.03%, O 30.94%.

Description and references

Prepd from salicylic acid and aq NH3: Cahours, Ann. 52, 336 (1844).

Chemical structure

Properties

Odorless, lustrous crystals or white, cryst powder. Discolors on exposure to light; loses some NH3 on long exposure to air. Readily discolored by iron compounds. One gram dissolves in 1 ml water, 3 ml alcohol. The aq soln is slightly acid. Keep in the dark and protected from contamination by iron.

Therapeutic Category

Analgesic; topically to loosen psoriatic scales.

Keywords

Antipsoriatic; Analgesic; Non-opioids; Salicylic Acid Derivatives