Bismuth Subgallate

Title: Bismuth Subgallate
CAS Registry Number: 22650-86-8
CAS Name: Gallic acid bismuth basic salt
Additional Names: bismuth gallate, basic
Trademarks: B.S.G. (Lemmon); Dermatol (Hoechst)
Molecular Formula: C7H5BiO6
Molecular Weight: 394.09
Percent Composition: C 21.33%, H 1.28%, Bi 53.03%, O 24.36%
Literature 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).
Derivative Type: 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.
Therap-Cat: Astringent; antacid; protective.
Therap-Cat-Vet: See Bismuth.
Keywords: Antacid; Astringent; Topical Protectant.
Bismuth Subnitrate Bismuth Subsalicylate Bismuth Sulfate Bismuth Sulfide Bismuth Tannate