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The solution reddens litmus and is an astringent.
It is a dark brown powder, which reddens litmus.
Tungstic acid, H 2 W0 4, is obtained as H 2 W0 4 H 2 0 by precipitating a tungstate with cold acid; this substance has a bitter taste and its aqueous solution reddens litmus.
Gummic acid reddens litmus, its reaction being about equal to carbonic acid.
Infinite space reddens then cools silently at the heart of the rose.