Two fluids, one of which is a solution of nitrate of silver in ammoniacal water, and the other a solution of pyrogallic acid. |
Herbert B. Berkeley recommended the use of sulphite of soda with pyrogallic acid to prevent discolouration of film. |
As a biomass, the peanut hull is a complex material consisted of polyphenol such as catechol, pyrogallic acid and m-trihydroxybenzene, mineral, lipid, and cellulose, etc. |