Elements of chemistry including the recent discoveries and doctrines of the science, Volum 2,Del 21841 |
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Side 1042
... action of heat , tannic acid is converted into metagallic and pyrogallic acids . TANNATES . These salts are characterized by striking a deep bluish - black colour with the persalts of iron ( ink ) . They do not precipitate gelatine till ...
... action of heat , tannic acid is converted into metagallic and pyrogallic acids . TANNATES . These salts are characterized by striking a deep bluish - black colour with the persalts of iron ( ink ) . They do not precipitate gelatine till ...
Side 1043
... action of sulphuric acid is a secondary product of the decomposition of a colourless compound produced at first with the gallic acid . If from 1 at . of tannic acid we subtract 2 at . of anhydrous gallic acid , the re- mainder has the ...
... action of sulphuric acid is a secondary product of the decomposition of a colourless compound produced at first with the gallic acid . If from 1 at . of tannic acid we subtract 2 at . of anhydrous gallic acid , the re- mainder has the ...
Side 1045
... ACTION OF HEAT ON GALLIC AND TANNIC ACIDS . When tannic acid is distilled by a quick fire , it froths and melts into a black viscid liquid , which , after the heat has been continued for some time , becomes solid . The volatile products ...
... ACTION OF HEAT ON GALLIC AND TANNIC ACIDS . When tannic acid is distilled by a quick fire , it froths and melts into a black viscid liquid , which , after the heat has been continued for some time , becomes solid . The volatile products ...
Side 1046
... different proportions , by the action of heat ; namely , metagallic , pyrogallic , and carbonic acids , and water . Tannic acid may be viewed as a compound of gallic and pyrogal- lic acids . 3 at . tannic acid ; 3 ( C18H ̧O12 )
... different proportions , by the action of heat ; namely , metagallic , pyrogallic , and carbonic acids , and water . Tannic acid may be viewed as a compound of gallic and pyrogal- lic acids . 3 at . tannic acid ; 3 ( C18H ̧O12 )
Side 1048
... action of sulphuric acid on gallic acid ; from which , however , it dif- fers in its colour , and in the insolubility of its compound with potash . Ellagic acid , when heated , yields a greenish - yellow vapour , which condenses into ...
... action of sulphuric acid on gallic acid ; from which , however , it dif- fers in its colour , and in the insolubility of its compound with potash . Ellagic acid , when heated , yields a greenish - yellow vapour , which condenses into ...
Vanlige uttrykk og setninger
According acetic acid forms action of heat alkalies ammonia analysis baryta Berzelius bibasic salt boiling butter butyric camphor carbo-hydrogen carbonic acid Chevreul chlorine Citrate colour colourless composition compound contains converted crystalline crystals decomposed deposits dissolved distilled drying oils Dumas Edition elaidic acid essential oils ether evaporated fixed oils formula Fremy fusible gallic acid hydrated acid hydrochloric acid hydrogen insoluble in water latter Liebig lime malic margaric margarine meconic acid melts mixture monobasic neutral nitric acid nitrous obtained oil of turpentine oils and fats oily acids oily liquid oleate oleic acid oleine olive oil oxide of ethule oxide of glycerule oxide of lead oxygen Pelouze potash precipitate pure purified quantity resins sebacic acid silver smell soap soda solid soluble in alcohol solution sparingly soluble stearate stearic acid stearopténe suberic acid substance sulphuric acid tannic acid tartaric acid Tartrate taste temperature tion tribasic University College volatile yields
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Side 9 - PRINCIPLES of GEOMETRY, familiarly Illustrated, and applied to a variety of useful purposes. Designed for the Instruction of Young Persons. Second Edition, revised...
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Side 9 - Tables of Logarithms Common and Trigonometrical to Five Places. Under the Superintendence of the Society for the Diffusion of Useful Knowledge. Fcap. 8vo.
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Side 14 - THE STUDENT'S JOURNAL. Arranged, Printed, and Ruled for receiving an Account of every Day's Employment for the space of One Year. With an Index and Appendix.