1283. Bismuth Subgallate

Nomenclature

CAS number: 22650-86-8
Gallic acid bismuth basic salt; bismuth gallate, basic; B.S.G. (Lemmon); Dermatol (Hoechst).
C7H5BiO6; mol wt 394.09.
C 21.33%, H 1.28%, Bi 53.03%, O 24.36%.

Description and references

Prepd from bismuth nitrate and gallic acid in an acetic acid medium. The acetic acid may be replaced with a glycol or mannitol: Pfeiffer, Schmitz, Pharmazie 5, 517 (1950).

Chemical structure

Derivative

Hydrate.

Properties

Bright yellow, odorless, tasteless powder. Practically insol in water, alc, chloroform, ether; sol in dil alkali hydroxide solns, in hot mineral acids with decompn. Forms a water-sol sodium salt which has an alkaline reaction.

Note

Major active ingredient of Bongast.

Therapeutic Category

Astringent; antacid; protective.

Therapeutic Category (Veterinary)

See Bismuth.

Keywords

Antacid; Astringent; Topical Protectant